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Paul Dirac (6,818 words) [view diff] no match in snippet view article find links to article

Paul Adrien Maurice Dirac. country GBR | OM | FRS (d | ɪ | ˈ | r | æ | k di | RAK 8 August 1902 – 20 October 1984) was an English ...
Dirac equation (6,156 words) [view diff] no match in snippet view article find links to article
In particle physics , the Dirac equation is a relativistic wave equation derived by British physicist Paul Dirac in 1928. In its free ...
Dirac delta function (11,565 words) [view diff] no match in snippet view article find links to article
In mathematics, the Dirac delta function, or δ function, is a generalized function , or distribution , on the real number line that is zero ...
Dirac (video compression format) (1,845 words) [view diff] no match in snippet view article find links to article
Dirac is an open and royalty-free video compression format specification and system developed by BBC Research at the BBC Schrödinger ...
Fermi–Dirac statistics (3,585 words) [view diff] no match in snippet view article find links to article
In quantum statistics , a branch of physics , Fermi–Dirac statistics describes a distribution of particles in certain systems comprising ...
Dirac Prize (912 words) [view diff] no match in snippet view article find links to article
The Dirac Prize is the name of four prominent award s in the field of theoretical physics , computational chemistry , and mathematics , ...
Dirac spinor (1,956 words) [view diff] no match in snippet view article find links to article
In quantum field theory , the Dirac spinor is the bispinor in the plane-wave solution:\ psi \omega_\vec p\;e^-ipx. of the free Dirac ...
Gamma matrices (5,613 words) [view diff] no match in snippet view article find links to article
In mathematical physics , the gamma matrices , \ \gamma^0, \gamma^1, \gamma^2, \gamma^3 \ , also known as the Dirac matrices, are a set of ...
Gabriel Andrew Dirac (209 words) [view diff] no match in snippet view article find links to article
Gabriel Andrew Dirac (March 13, 1925 – July 20, 1984) was a mathematician who mainly worked in graph theory . He stated a sufficient ...
Fermionic field (1,278 words) [view diff] no match in snippet view article find links to article
In quantum field theory , a fermionic field is a quantum field whose quanta are fermion s; that is, they obey Fermi–Dirac statistics . ...
Dirac, Charente (157 words) [view diff] no match in snippet view article find links to article
Dirac is a commune in the Charente department in the Poitou-Charentes region in southwestern France . Population: align left | 1962 | 538 ...
Dirac sea (1,625 words) [view diff] no match in snippet view article find links to article
The Dirac sea is a theoretical model of the vacuum as an infinite sea of particles with negative energy . physicist Paul Dirac in 1930 to ...
Dirac fermion (116 words) [view diff] no match in snippet view article find links to article
In physics , a Dirac fermion is a fermion which is not its own antiparticle . It is named for Paul Dirac . modelled with the Dirac equation . ...
Dirac operator (722 words) [view diff] no match in snippet view article find links to article
In mathematics and quantum mechanics , a Dirac operator is a differential operator that is a formal square root, or half-iterate , of a ...
Dirac comb (1,114 words) [view diff] no match in snippet view article find links to article
In mathematics , a Dirac comb (also known as an impulse train and sampling function in electrical engineering ) is a periodic Schwartz ...
Dirac adjoint (419 words) [view diff] no match in snippet view article find links to article
In quantum field theory , the Dirac adjoint defines the dual operation of a Dirac spinor . The Dirac adjoint is motivated by the need to ...
Dirac measure (562 words) [view diff] no match in snippet view article find links to article
In mathematics , a Dirac measure is a measure δ x on a set X (with any σ-algebra of subset s of X) defined for a given x ∈ X and any ...
Dirac bracket (4,068 words) [view diff] no match in snippet view article find links to article
The Dirac bracket is a generalization of the Poisson bracket developed by Paul Dirac to treat classical systems with second class ...
Dirac algebra (563 words) [view diff] no match in snippet view article find links to article
In mathematical physics , the Dirac algebra is the Clifford algebra C ℓ 1,3(C). This was introduced by the mathematical physicist P. A. M ...
Dirac string (379 words) [view diff] no match in snippet view article find links to article
In physics , a Dirac string is a hypothetical one-dimensional curve in space, conceived of by the physicist Paul Dirac , stretching between ...
Dirac large numbers hypothesis (2,643 words) [view diff] no match in snippet view article find links to article
The Dirac large numbers hypothesis (LNH) is an observation made by Paul Dirac in 1937 relating ratios of size scales in the Universe to ...
Dirac spectrum (126 words) [view diff] no match in snippet view article find links to article
In mathematics , a Dirac spectrum, named after Paul Dirac , is the spectrum of eigenvalue s of a Dirac operator on a Riemannian manifold ...
Two-body Dirac equations (6,412 words) [view diff] no match in snippet view article find links to article
In quantum field theory , and in the significant subfields of quantum electrodynamics and quantum chromodynamics , the two-body Dirac ...
Kapitsa–Dirac effect (425 words) [view diff] no match in snippet view article find links to article
The Kapitsa–Dirac effect is a quantum mechanical effect consisting of the diffraction of electrons by a standing wave of light The effect ...
5997 Dirac (177 words) [view diff] no match in snippet view article find links to article
5997 Dirac (1983 TH) is a main-belt asteroid discovered on October 1, 1983 by A. Mrkos at Klet . External links : http://ssd. ...
Magnetic monopole (10,372 words) [view diff] no match in snippet view article find links to article
Dirac's quantization: One of the defining advances in quantum theory was Paul Dirac 's work on developing a relativistic quantum ...
Nonlinear Dirac equation (987 words) [view diff] no match in snippet view article find links to article
In quantum field theory , the nonlinear Dirac equation is a model of self-interacting Dirac fermion s. This model is widely considered in ...
Complete Fermi–Dirac integral (134 words) [view diff] no match in snippet view article find links to article
In mathematics , the complete Fermi–Dirac integral, named after Enrico Fermi and Paul Dirac , for an index j  is given by: F_j(x) \frac 1\ ...
Dirac hole theory (211 words) [view diff] no match in snippet view article find links to article
Dirac hole theory is a theory in quantum mechanics , named after English theoretical physicist Paul Dirac . solutions to the Dirac equation ...
Bra–ket notation (5,429 words) [view diff] no match in snippet view article find links to article
The notation was introduced in 1939 by Paul Dirac and is also known as Dirac notation, though the notation has precursors in Grassmann 's ...
Feynman slash notation (456 words) [view diff] no match in snippet view article find links to article
In the study of Dirac field s in quantum field theory , Richard Feynman invented the convenient Feynman slash notation (less commonly known ...
Einstein–Maxwell–Dirac equations (786 words) [view diff] no match in snippet view article find links to article
Einstein–Maxwell–Dirac equations (EMD) are related to quantum field theory . The current Big Bang Model is a quantum field theory in a ...
Incomplete Fermi–Dirac integral (70 words) [view diff] no match in snippet view article find links to article
In mathematics , the incomplete Fermi –Dirac integral for an index j is given by: F_j(x,b) \frac 1\Gamma(j+1) \int_b^\infty \frac t^j\exp ...
Interaction picture (1,369 words) [view diff] no match in snippet view article find links to article
In quantum mechanics , the interaction picture (also known as the Dirac picture) is an intermediate representation between the Schrödinger ...
Dirac equation in curved spacetime (446 words) [view diff] no match in snippet view article find links to article
In mathematical physics , the Dirac equation in curved spacetime generalizes the original Dirac equation to curved space . It can be ...
Dirac equation in the algebra of physical space (1,209 words) [view diff] no match in snippet view article find links to article
The Dirac equation , as the relativistic equation that describes spin 1/2 particles in quantum mechanics can be written in terms of the ...
Dirac–von Neumann axioms (429 words) [view diff] no match in snippet view article find links to article
In mathematical physics , the Dirac–von Neumann axioms give a mathematical formulation of quantum mechanics in terms of operator s on a ...
Helical Dirac fermion (74 words) [view diff] no match in snippet view article find links to article
A Helical Dirac fermion is a charge carrier that behaves as a massless relativistic particle with its intrinsic spin locked to its ...
Planck constant (7,804 words) [view diff] no match in snippet view article find links to article
The resulting constant is called the reduced Planck constant or Dirac constant. It is equal to the Planck constant divided by 2 π, and is ...
Fermion (1,095 words) [view diff] no match in snippet view article find links to article
In particle physics , a fermion (a name coined by Paul Dirac from the surname of Enrico Fermi ) is any particle characterized by Fermi– ...
Abraham–Lorentz force (2,193 words) [view diff] no match in snippet view article find links to article
Its relativistic generalization is called the "Abraham-Lorentz-Dirac force". relativistic, called the "Abraham–Lorentz–Dirac–Langevin equation". ...
List of things named after Paul Dirac (121 words) [view diff] no match in snippet view article find links to article
In mathematics and physics , below is a list of things named in honour of Paul Adrien Maurice Dirac . Physics : Notations : Dirac notation ...
The Strangest Man (589 words) [view diff] no match in snippet view article find links to article
The Strangest Man: The Hidden Life of Paul Dirac, Quantum Genius is a 2009 biography of quantum physicist Paul Dirac written by British ...
Hamiltonian path (1,618 words) [view diff] no match in snippet view article find links to article
In fact, both Dirac's and Ore's theorems are less powerful than what can be derived from Pósa 's theorem (1962). Dirac and Ore's theorems ...
Clifford analysis (3,097 words) [view diff] no match in snippet view article find links to article
Clifford analysis, using Clifford algebra s named after William Kingdon Clifford , is the study of Dirac operator s, and Dirac type ...
Breit equation (1,202 words) [view diff] no match in snippet view article find links to article
The Breit equation is a relativistic wave equation derived by Gregory Breit in 1929 based on the Dirac equation , which formally ...
Chordal graph (2,166 words) [view diff] no match in snippet view article find links to article
According to a theorem of Dirac | 1961, chordal graphs are graphs in which each minimal separator is a clique; Dirac used this ...
Wasp (novel) (1,424 words) [view diff] no match in snippet view article find links to article
These threats are always signed by a mythical rebel organisation named Dirac Angestun Gesept (Sirian Freedom Party) and often emblazoned ...
Spinor (7,800 words) [view diff] no match in snippet view article find links to article
describe non-relativistic electrons and other fermion s which have spin-½. Dirac spinor s, spinors of the Lorentz metric in dimension 4, are ...
Quantum mechanics (11,237 words) [view diff] no match in snippet view article find links to article
By 1930, quantum mechanics had been further unified and formalized by the work of David Hilbert , Paul Dirac and John von Neumann with a ...
Photon (12,990 words) [view diff] no match in snippet view article find links to article
in 1926, Paul Dirac derived the B_ij rate constants in using a semiclassical approach and, in 1927, succeeded in deriving all the rate ...
Connectivity (graph theory) (1,618 words) [view diff] no match in snippet view article find links to article
According to a theorem of G. A. Dirac , if a graph is k connected for. k ≥ 2 then for every set of. k vertices in the graph there is a cycle that ...
Electron (15,752 words) [view diff] no match in snippet view article find links to article
In 1928, building on Wolfgang Pauli's work, Paul Dirac produced a model of the electron – the Dirac equation , consistent with relativity ...
Schrödinger equation (11,230 words) [view diff] no match in snippet view article find links to article
The Dirac equation arose from taking the "square root" of the Klein–Gordon equation by factorizing the entire relativistic wave operator ...
Spin (physics) (6,774 words) [view diff] no match in snippet view article find links to article
However, in 1928, Paul Dirac published the Dirac equation , which described the relativistic electron . In the Dirac equation, a four- ...
Majorana fermion (2,061 words) [view diff] no match in snippet view article find links to article
All of the Standard Model fermions except the neutrino behave as Dirac fermions at low energy (after electroweak symmetry breaking ), but ...
Wolfgang Pauli (3,667 words) [view diff] no match in snippet view article find links to article
This work is sometimes said to have influenced Paul Dirac in his creation of the Dirac equation for the relativistic electron, though ...
Graphene (19,428 words) [view diff] no match in snippet view article find links to article
The emergent massless Dirac equation was first pointed out by Gordon Walter Semenoff and David P. DeVincenzo and Eugene J. Mele Semenoff ...
Quantum electrodynamics (6,245 words) [view diff] no match in snippet view article find links to article
The first formulation of a quantum theory describing radiation and matter interaction is attributed to British scientist Paul Dirac , who ...
Werner Heisenberg (15,724 words) [view diff] no match in snippet view article find links to article
The first, Bemerkungen zur Diracschen Theorie des Positrons (Remarks on Dirac's theory of the positron) was published in 1934 and the ...
Delta potential (2,243 words) [view diff] no match in snippet view article find links to article
In quantum mechanics the delta potential is a potential well mathematically described by the Dirac delta function - a generalized ...
Laplacian of the indicator (4,112 words) [view diff] no match in snippet view article find links to article
In mathematics, the Laplacian of the indicator of the domain D is a generalisation of the derivative of the Dirac delta function to higher ...
Positron (1,982 words) [view diff] no match in snippet view article find links to article
Robert Oppenheimer argued strongly against the proton being the negative-energy electron solution to Dirac's equation. Dirac published a ...
N-slit interferometric equation (1,531 words) [view diff] no match in snippet view article find links to article
Quantum mechanics was first applied to optics , and interference in particular, by Paul Dirac Feynman, in his lectures , uses Dirac's ...
Enrico Fermi (11,667 words) [view diff] no match in snippet view article find links to article
followed with a paper in which he applied the principle to an ideal gas , employing a statistical formulation now known as Fermi–Dirac statistics . ...
The Principles of Quantum Mechanics (447 words) [view diff] no match in snippet view article find links to article
The Principles of Quantum Mechanics is an influential monograph on quantum mechanics written by Paul Dirac and first published by Oxford ...
Canonical quantization (3,198 words) [view diff] no match in snippet view article find links to article
Historically, this was not quite Werner Heisenberg 's route to obtaining quantum mechanics , but Paul Dirac introduced it in his 1926 ...
Soler model (490 words) [view diff] no match in snippet view article find links to article
The Soler model is a quantum field theory model of Dirac fermion s interacting via four fermion interaction s in 3 spatial and 1 time ...
Foldy–Wouthuysen transformation (3,975 words) [view diff] no match in snippet view article find links to article
Wouthuysen in 1949 to understand the nonrelativistic limit of the Dirac equation , the equation for the spin-1/2 particles A detailed ...
't Hooft–Polyakov monopole (472 words) [view diff] no match in snippet view article find links to article
In theoretical physics , the t Hooft–Polyakov monopole is a topological soliton similar to the Dirac monopole but without any ...
Distribution (mathematics) (7,412 words) [view diff] no match in snippet view article find links to article
as the Dirac delta function (which is historically called a "function" even though it is not considered a genuine function mathematically). ...
History of quantum field theory (3,578 words) [view diff] no match in snippet view article find links to article
In particle physics, the history of quantum field theory starts with its creation by Paul Dirac , when he attempted to quantize the ...
Bispinor (2,225 words) [view diff] no match in snippet view article find links to article
The Dirac bispinor is connected with the Weyl bispinor by a unitary transformation to the Dirac basis ,:\ psi\rightarrow 1\over\sqrt2\left ...
Klein–Gordon equation (2,072 words) [view diff] no match in snippet view article find links to article
Any solution to the Dirac equation is automatically a solution to the Klein–Gordon equation, but the converse is not true. Statement ...
Majorana equation (364 words) [view diff] no match in snippet view article find links to article
The Majorana equation is a relativistic wave equation similar to the Dirac equation but includes the charge conjugate  ψ c of a spinor  ψ ...
Roman Jackiw (430 words) [view diff] no match in snippet view article find links to article
born 1939 is a theoretical physicist and Dirac Medal list. Born in Lubliniec , Poland to a Ukrainian family, the family later moved to ...
Gross–Neveu model (796 words) [view diff] no match in snippet view article find links to article
The Gross-Neveu model is a quantum field theory model of Dirac fermion s interacting via four fermion interaction s in 1 spatial and 1 time ...
Path integral formulation (10,189 words) [view diff] no match in snippet view article find links to article
of the Lagrangian in quantum mechanics by P. A. M. Dirac in his 1933 paper The complete method was developed in 1948 by Richard Feynman . ...
Zitterbewegung (874 words) [view diff] no match in snippet view article find links to article
"trembling motion", from German ) is a theoretical rapid motion of elementary particles, in particular electrons, that obey the Dirac equation . ...
Plate trick (524 words) [view diff] no match in snippet view article find links to article
In mathematics and physics , the plate trick, also known as Dirac 's string trick, the belt trick, Balinese cup trick, is any of several ...
Relativistic quantum mechanics (11,664 words) [view diff] no match in snippet view article find links to article
dynamics of charged particle s in electromagnetic field s The key result is the Dirac equation , from which these predictions emerge automatically. ...
Klein paradox (821 words) [view diff] no match in snippet view article find links to article
In 1929, physicist Oskar Klein obtained a surprising result by applying the Dirac equation to the familiar problem of electron scattering ...
Kogut–Susskind fermion (103 words) [view diff] no match in snippet view article find links to article
Kogut–Susskind fermions are a lattice version of Kähler–Dirac fermion s, which obey a first-order differential equation by taking an ...
Higher-dimensional gamma matrices (1,611 words) [view diff] no match in snippet view article find links to article
matrices generalize to arbitrary dimension the four-dimensional Gamma matrices of Dirac, which are a mainstay of relativistic quantum mechanics. ...
Spin geometry (136 words) [view diff] no match in snippet view article find links to article
In mathematics, spin geometry is the area of differential geometry and topology where objects like spin manifold s and Dirac operator s, ...
Mark Newman (808 words) [view diff] no match in snippet view article find links to article
Mark Newman is a British physicist and Paul Dirac Professor of Physics at the University of Michigan , as well as an external faculty ...
Canonical quantum gravity (3,196 words) [view diff] no match in snippet view article find links to article
dirac Dirac's approach allows the quantization of systems that include gauge symmetries using Hamiltonian techniques in a fixed gauge ...
Spacetime algebra (2,130 words) [view diff] no match in snippet view article find links to article
The basis vectors \gamma_k share these properties with the Dirac matrices , but no explicit matrix representation is utilized in STA. ...
Clifford algebra (7,824 words) [view diff] no match in snippet view article find links to article
The Dirac matrices were first written down by Paul Dirac when he was trying to write a relativistic first-order wave equation for the ...
C-number (133 words) [view diff] no match in snippet view article find links to article
The term c-number (or classical number) is an old nomenclature used by Paul Dirac which refers to real and complex numbers. ...
Transformation theory (quantum mechanics) (262 words) [view diff] no match in snippet view article find links to article
The term transformation theory refers to a procedure and a "picture" used by P. A. M. Dirac in his early formulation of quantum theory , ...
Heaviside step function (1,051 words) [view diff] no match in snippet view article find links to article
It is also used in structural mechanics together with the Dirac delta function to describe different types of structural load s. ...
Kronecker delta (2,222 words) [view diff] no match in snippet view article find links to article
and in fact Dirac's delta was named after the Kronecker delta because of this analogous property. distinguishes the Kronecker and Dirac "functions". ...
Unit doublet (177 words) [view diff] no match in snippet view article find links to article
In mathematics, the unit doublet is the derivative of the Dirac delta function . It can be used to differentiate signals in electrical ...
Matrix mechanics (9,372 words) [view diff] no match in snippet view article find links to article
It is equivalent to the Schrödinger wave formulation of quantum mechanics, and is the basis of Dirac 's bra–ket notation for the wave ...
Boson (1,711 words) [view diff] no match in snippet view article find links to article
make up one of the two classes of particle s, the other being fermion s The name boson was coined by Paul Dirac to commemorate the ...
Bernd Berg (218 words) [view diff] no match in snippet view article find links to article
Bernd A. Berg is the Dirac Professor of Physics at the Florida State University His multicanonical approach to computer simulations is ...
Naresh Dalal (273 words) [view diff] no match in snippet view article find links to article
He is the Dirac Professor of Chemistry and Biochemistry at Florida State University , where he is affiliated with the National High ...
Bristol and Bath Science Park (218 words) [view diff] no match in snippet view article find links to article
Bristol and Bath Science Park (BBSP) is a science park located at Dirac Crescent, Emersons Green , Bristol England. It cost £300 million ...
Fermi filter (63 words) [view diff] no match in snippet view article find links to article
The Fermi filter is a common image processing filter that uses the Fermi-Dirac distribution in the Frequency domain to perform a low-pass ...
Theora (4,412 words) [view diff] no match in snippet view article find links to article
It is comparable in open standards philosophy to the BBC 's Dirac codec. Theora is named after Theora Jones , Edison Carter 's Controller ...
Erice statement (155 words) [view diff] no match in snippet view article find links to article
The Erice statement is a statement written by Paul Dirac , Piotr Kapitza , and Antonino Zichichi asking for freedom of expression for ...
Quantum field theory (7,909 words) [view diff] no match in snippet view article find links to article
The early development of the field involved Dirac , Fock , Pauli , Heisenberg and Bogolyubov . This phase of development culminated with ...
Lagrangian (5,968 words) [view diff] no match in snippet view article find links to article
Dirac Lagrangian: The Lagrangian density for a Dirac field is:\ mathcal L i \hbar c \bar \psi \partial\!\!/\ \ psi - mc^2 \bar\psi \psi ...
Special relativity (11,813 words) [view diff] no match in snippet view article find links to article
In 1928, Paul Dirac constructed an influential relativistic wave equation , now known as the Dirac equation in his honour that is fully ...
Bose–Einstein statistics (4,101 words) [view diff] no match in snippet view article find links to article
At low temperatures, bosons behave differently from fermion s (which obey the Fermi–Dirac statistics ) in that an unlimited number of them ...
Support (measure theory) (1,431 words) [view diff] no match in snippet view article find links to article
Dirac measure : In the case of Dirac measure δ p, let x ∈ R and consider two cases: if x p, then every open neighbourhood N x of x contains ...
Rarita–Schwinger equation (576 words) [view diff] no match in snippet view article find links to article
where ϵ μνρσ is the Levi-Civita symbol , γ 5 and γ ν are Dirac matrices , m is the mass, σ μν ≡ i | 2 γ μ, γ ν, and ψ σ is a vector-valued ...
Antiparticle (2,276 words) [view diff] no match in snippet view article find links to article
In 1932, soon after the prediction of positron s by Paul Dirac , Carl D. Anderson found that cosmic-ray collisions produced these ...
Antiproton (1,534 words) [view diff] no match in snippet view article find links to article
The existence of the antiproton with −1 electric charge, opposite to the +1 electric charge of the proton, was predicted by Paul Dirac in ...
Bargmann–Wigner equations (4,569 words) [view diff] no match in snippet view article find links to article
Origin from the Dirac equation : Dirac equation. For reference, the Dirac equation is summarized below. It is the basis for building ...
Electron magnetic dipole moment (2,207 words) [view diff] no match in snippet view article find links to article
Electron spin in the Pauli and Dirac theories : Pauli equation | Dirac equation The necessity of introducing half-integral spin goes back ...
Quantization of the electromagnetic field (3,632 words) [view diff] no match in snippet view article find links to article
In Dirac's theory the fields are quantized for the first time and it is also the first time that Planck's constant enters the expressions ...
Fourier transform (13,055 words) [view diff] no match in snippet view article find links to article
xi) |\displaystyle \sqrt 2\pi\cdot \delta(\omega) |\displaystyle 2\pi\delta(\nu) | The distribution δ(ξ) denotes the Dirac delta function . | ...
Extended periodic table (9,278 words) [view diff] no match in snippet view article find links to article
Relativistic Dirac equation: The relativistic Dirac equation gives the ground state energy as: E\frac m c^2\sqrt 1-\frac v^2 c^2\frac m c^2\ ...
Relativistic wave equations (2,914 words) [view diff] no match in snippet view article find links to article
Although a landmark in quantum theory, the Dirac equation is only true for spin- 1 | 2 fermions, and still predicts negative energy ...
Physicist (3,951 words) [view diff] no match in snippet view article find links to article
File:Dirac 4.jpg | Paul Dirac (1902–84): made fundamental contributions to the early development of quantum mechanics and quantum ...
Lamb shift (1,690 words) [view diff] no match in snippet view article find links to article
According to the Dirac equation , the 2 S 1/2 and 2 P 1/2 orbitals should have the same energy. accounted for by the Dirac equation) causes ...
John Cardy (482 words) [view diff] no match in snippet view article find links to article
He was elected as a Fellow of the Royal Society in 1991 received the Dirac Medal of the IoP in 2000 was awarded the Lars Onsager Prize ...
Polylogarithm (7,595 words) [view diff] no match in snippet view article find links to article
In quantum statistics , the polylogarithm function appears as the closed form of integrals of the Fermi–Dirac distribution and the Bose– ...
Chirality (physics) (1,388 words) [view diff] no match in snippet view article find links to article
Invariance under parity by a Dirac fermion is called chiral symmetry. An experiment on the weak decay of cobalt -60 nuclei carried out by ...
Hydrogen-like atom (4,132 words) [view diff] no match in snippet view article find links to article
the two particles, their (non-relativistic) Schrödinger equation can be solved in analytic form, as can the (relativistic) Dirac equation . ...
Anomalous magnetic dipole moment (1,061 words) [view diff] no match in snippet view article find links to article
The "Dirac" magnetic moment , corresponding to tree-level Feynman diagrams (which can be thought of as the classical result), can be ...
List of scientific laws named after people (1,593 words) [view diff] no match in snippet view article find links to article
Dirac equation Dirac delta function Dirac comb Dirac spinor Dirac operator  See also: List of things named after Paul Dirac | ...
Valuation (measure theory) (1,046 words) [view diff] no match in snippet view article find links to article
Examples Dirac valuation: Let \scriptstyle (X,\mathcal T) be a topological space, and let x be a point of X: the map:\ delta_x(U ...
Fujikawa method (866 words) [view diff] no match in snippet view article find links to article
To calculate a change in the measure under a chiral transformation, first consider the dirac fermions in a basis of eigenvectors of the ...
List of atheists in science and technology (26,526 words) [view diff] no match in snippet view article find links to article
Paul Dirac (1902–1984): British theoretical physicist , one of the founders of quantum mechanics , predicted the existence of antimatter ...
Feynman checkerboard (1,277 words) [view diff] no match in snippet view article find links to article
It provides a representation of solutions of the Dirac equation in (1+1)-dimensional spacetime as discrete sums. The model can be ...
Hans Heinrich Euler (387 words) [view diff] no match in snippet view article find links to article
with a thesis Über die Streuung von Licht an Licht nach der Diracschen Theorie (On the scattering of light by light based on Dirac's theory). ...
Introduction to quantum mechanics (11,265 words) [view diff] no match in snippet view article find links to article
Dirac wave equation: Dirac equation. File:Dirac 3.jpg | Paul Dirac (1902–1984) In 1928, Paul Dirac extended the Pauli equation , which ...
Virtual particle (3,013 words) [view diff] no match in snippet view article find links to article
Paul Dirac was the first to propose that empty space (a vacuum) can be visualized as consisting of a sea of electrons with negative energy ...
Mathematical formulation of quantum mechanics (5,184 words) [view diff] no match in snippet view article find links to article
von Neumann , Hermann Weyl and Paul Dirac , and it became possible to unify several different approaches in terms of a fresh set of ideas. ...
Wave function (9,351 words) [view diff] no match in snippet view article find links to article
Soon after in 1928, Dirac found an equation from the first successful unification of special relativity and quantum mechanics applied to ...
Impulse response (1,284 words) [view diff] no match in snippet view article find links to article
The impulse response of a linear transformation is the image of Dirac's delta function under the transformation, analogous to the ...
Timeline of developments in theoretical physics (290 words) [view diff] no match in snippet view article find links to article
Heisenberg Uncertainty Principle | 1927 | Matrix Mechanics | 1925 | Fermi-Dirac Statistics | 1926 | Schrödinger equation | 1926 | Born ...
First class constraint (3,605 words) [view diff] no match in snippet view article find links to article
But Dirac noticed that we can turn the underlying differential manifold of the symplectic space into a Poisson manifold using a ...
Representation theory of the Lorentz group (16,011 words) [view diff] no match in snippet view article find links to article
contributions specialized to the Lorentz group over the years Physicist Paul Dirac was perhaps the first to manifestly knit everything ...
History of mathematical notation (19,055 words) [view diff] no match in snippet view article find links to article
describing radiation and matter interaction is due to Paul Adrien Maurice Dirac , who, during 1920, was first able to compute the ...
List of important publications in physics (15,870 words) [view diff] no match in snippet view article find links to article
In these papers, Dirac formulates and derives the Dirac equation , which won him a Nobel Prize (1933) in Physics. last Feynman | first ...
Thirring model (841 words) [view diff] no match in snippet view article find links to article
The Thirring model is an exactly solvable quantum field theory which describes the self-interactions of a Dirac field in (1+1) dimensions. ...
Exchange interaction (2,898 words) [view diff] no match in snippet view article find links to article
Exchange interaction effects were discovered independently by physicists Werner Heisenberg and Paul Dirac in 1926." "Force" description ...
J. Robert Oppenheimer (15,053 words) [view diff] no match in snippet view article find links to article
Dirac's paper introduced an equation, known as the Dirac equation , which unified quantum mechanics, special relativity and the then-new ...
Self-adjoint operator (4,370 words) [view diff] no match in snippet view article find links to article
In quantum mechanics their importance lies in the Dirac –von Neumann formulation of quantum mechanics, in which physical observable s ...
Causal fermion system (3,648 words) [view diff] no match in snippet view article find links to article
The physical starting point is the fact that the Dirac equation in Minkowski space has solutions of negative energy which are usually ...
Sterile neutrino (2,634 words) [view diff] no match in snippet view article find links to article
Dirac and Majorana terms: Sterile neutrinos allow the introduction of a Dirac mass term as usual. This can yield the observed neutrino mass ...
N-slit interferometer (1,309 words) [view diff] no match in snippet view article find links to article
Feynman described thought experiment s, of two-slit quantum interference, of electrons using Dirac's notation This approach was extended ...
List of agnostics (39,377 words) [view diff] no match in snippet view article find links to article
Paul Dirac (1902–1984): British theoretical physicist , one of the founders of quantum mechanics , predicted the existence of antimatter ...
The Quincunx of Time (1,429 words) [view diff] no match in snippet view article find links to article
Late in the 21st century, a device called the Dirac communicator promises instantaneous communication across interstellar distances. ...
First-order hold (1,316 words) [view diff] no match in snippet view article find links to article
in the sampling and reconstruction theorem , a sequence of dirac impulses , x s(t), representing the discrete samples, x(nT), is low-pass ...
Chiral anomaly (1,254 words) [view diff] no match in snippet view article find links to article
In particular, there is a Dirac sea of fermions and, when such a tunneling happens, it causes the energy level s of the sea fermions to ...
Florida State University (18,992 words) [view diff] no match in snippet view article find links to article
Information Technology The library also houses a collection of materials principally related to Dirac's times at FSU and Cambridge University ...
Satyendra Nath Bose (3,173 words) [view diff] no match in snippet view article find links to article
The class of particles that obey Bose–Einstein statistics, boson s, was named after him by Paul Dirac A self-taught scholar and a polyglot ...
Clebsch–Gordan coefficients (3,269 words) [view diff] no match in snippet view article find links to article
The formulas below use Dirac's bra–ket notation . Clebsch–Gordan coefficients are the expansion coefficients of total angular momentum ...
Theoretical chemistry (1,370 words) [view diff] no match in snippet view article find links to article
Bohr's quantized model of electron in the atom, applies to both the time independent Schrödinger and the time dependent Dirac formulations. ...
Standard Model (mathematical formulation) (7,512 words) [view diff] no match in snippet view article find links to article
If abstract index notation is used also for spinors then these will carry a spinorial index and the Dirac gamma will carry one Lorentzian ...
Ehrenfest theorem (1,679 words) [view diff] no match in snippet view article find links to article
Dirac's rule of thumb suggests that statements in quantum mechanics which contain a commutator correspond to statements in classical ...
Primary constraint (513 words) [view diff] no match in snippet view article find links to article
primary constraint is a relation between the coordinates and momenta that holds without using the equations of motion Dirac | 1964 | loc p.8. ...
Index of physics articles (D) (1,765 words) [view diff] no match in snippet view article find links to article
D Dirac Prize Dirac adjoint Dirac delta function Dirac equation Dirac equation in the algebra of physical space Dirac fermion ...
Moyal bracket (1,085 words) [view diff] no match in snippet view article find links to article
his work in 1949 after a lengthy dispute with Paul Dirac In the meantime this idea was independently introduced in 1946 by Hip Groenewold ...
Niels Bohr (10,667 words) [view diff] no match in snippet view article find links to article
This work attracted the attention of the British physicist Paul Dirac ,Pais | 1991 | pp 275–279 who came to Copenhagen for six months in ...
Yukawa interaction (959 words) [view diff] no match in snippet view article find links to article
In particle physics , Yukawa's interaction, named after Hideki Yukawa , is an interaction between a scalar field ϕ and a Dirac field ψ of ...
Physics (8,900 words) [view diff] no match in snippet view article find links to article
Quantum mechanics would come to be pioneered by Werner Heisenberg , Erwin Schrödinger and Paul Dirac . From this early work, and work in ...
Matrix representation of Maxwell's equations (2,939 words) [view diff] no match in snippet view article find links to article
where Σ are the Dirac spin matrices and α are the matrices used in the Dirac equation , and σ is the triplet of the Pauli matrices :\ ...
Theodore James Courant (292 words) [view diff] no match in snippet view article find links to article
In particular, he made seminal contributions to the study of Dirac manifolds which generalize both symplectic manifold s and Poisson ...
Fierz identity (366 words) [view diff] no match in snippet view article find links to article
There is a version of the Fierz identities for Dirac spinor s and there is another version for Weyl spinor s. And there are versions for ...
Higher-dimensional supergravity (4,128 words) [view diff] no match in snippet view article find links to article
The canonical example of a spinorial representation is the Dirac spinor , which exists in every number of space-time dimensions. ...
Momentum operator (1,326 words) [view diff] no match in snippet view article find links to article
Fourier transform: where δ stands for Dirac's delta function . Derivation from infinitesimal translations: Noether's theorem. The translation ...
Particle statistics (875 words) [view diff] no match in snippet view article find links to article
Fermi–Dirac statistics: Fermi–Dirac statistics. In Fermi–Dirac statistics (F–D statistics) interchanging any two particles of the system leaves ...
Higgsino (381 words) [view diff] no match in snippet view article find links to article
The Higgsino is a Dirac fermion and that is a weak isodoublet with hypercharge half under the Standard Model gauge symmetries. ...
Chung-Yao Chao (312 words) [view diff] no match in snippet view article find links to article
When the positron was discovered by Carl David Anderson in 1932, confirming the existence of Paul Dirac's "antimatter ", it became clear ...
Dyon (291 words) [view diff] no match in snippet view article find links to article
Dyons were first proposed by Julian Schwinger in 1969 as a phenomenological alternative to quarks He extended the Dirac quantization ...
State space (physics) (190 words) [view diff] no match in snippet view article find links to article
These state vectors , using Dirac's bra–ket notation , can often be treated like coordinate vector s and operated on using the rules of ...
Vladimir E. Zakharov (763 words) [view diff] no match in snippet view article find links to article
Zakharov was awarded the Dirac Medal in 2003 for his contributions to the theory of turbulence , with regard to the exact results and the ...
Antimatter (5,848 words) [view diff] no match in snippet view article find links to article
The modern theory of antimatter began in 1928, with a paper by Paul Dirac . Dirac realised that his relativistic version of the ...
Charles L. Kane (480 words) [view diff] no match in snippet view article find links to article
He received the 2012 Dirac Prize , along with Shoucheng Zhang and Duncan Haldane , for their groundbreaking work on two- and three- ...
Four-fermion interactions (191 words) [view diff] no match in snippet view article find links to article
This is a four-fermi theory of Dirac fermion s without chiral symmetry and as such, it may or may not be massive. The Thirring model . ...
Black star (semiclassical gravity) (442 words) [view diff] no match in snippet view article find links to article
A similar structure should also exist for the Einstein-Maxwell-Dirac equations system, which is the (super)classical limit of quantum ...
Aether theories (3,065 words) [view diff] no match in snippet view article find links to article
However, Dirac's aether hypothesis was motivated by his dissatisfaction with quantum electrodynamics , and it never gained support by the ...
Ogg (3,901 words) [view diff] no match in snippet view article find links to article
Being a container format, Ogg can embed audio and video in various formats (such as Dirac , MNG , CELT , MPEG-4 , MP3 and others) but Ogg ...
N.V.V.J. Swamy (831 words) [view diff] no match in snippet view article find links to article
influential papers on the relativistic Kepler problem They introduced a symmetric Hamiltonian and solved the Dirac Equation for the Hydrogen atom. ...
Dušanka Đokić (602 words) [view diff] no match in snippet view article find links to article
University of Belgrade in January 1976 with a thesis entitled "The Generalization of Dirac's Degenerate Systems Theory in Classic Field Theory". ...
Comparison of video codecs (4,415 words) [view diff] no match in snippet view article find links to article
net/projects/dirac_theora_evaluation/ Evaluation of Dirac and Theora | Scientific paper | 2009 Mar. | Dirac, Dirac Pro, Theora I, H.264 ...
Parastatistics (999 words) [view diff] no match in snippet view article find links to article
alternatives to the better known particle statistics models (Bose–Einstein statistics , Fermi–Dirac statistics and Maxwell–Boltzmann statistics ). ...
Shoucheng Zhang (684 words) [view diff] no match in snippet view article find links to article
prize in 2012, and the Dirac Medal and Prize in 2012 for his theoretical prediction of the quantum spin Hall effect and topological insulators . ...
Maxwell–Boltzmann statistics (3,166 words) [view diff] no match in snippet view article find links to article
(following instead Bose–Einstein statistics ) or fermions (subject to the Pauli exclusion principle , following instead Fermi–Dirac statistics ). ...
Basil Hiley (12,033 words) [view diff] no match in snippet view article find links to article
Hiley cites the wording of Paul Dirac : "Each electron only interferes with itself" and adds: "Somehow the ‘quantum force’ is a ‘private’ ...
Joseph Polchinski (693 words) [view diff] no match in snippet view article find links to article
In 2008 he won the Dirac Medal for his work in superstring theory Polchinski's paradox: In 1990, commenting on the Novikov self-consistency ...
Kramers–Heisenberg formula (472 words) [view diff] no match in snippet view article find links to article
The quantum mechanical derivation was given by Paul Dirac in 1927 The Kramers–Heisenberg formula was an important achievement when it was ...