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searching for half-integer 165 found (212 total)

alternate case: Half-integer

Hemiperfect number (198 words) [view diff] exact match in snippet view article find links to article

In number theory, a hemiperfect number is a positive integer with a half-integer abundancy index. In other words, σ(n)/n = k/2 for an odd integer k, where

under the exchange of any two particles, whereas for particles with half-integer spin (fermions), the wave function is antisymmetric under such an exchange

symmetry between particles with integer spin (bosons) and particles with half-integer spin (fermions). It proposes that for every known particle, there exists

the electrically charged part of the weak interaction: Particles with half-integer weak isospin can interact with the W± bosons; particles with zero weak

neutrinos, the tau is a lepton, and like all elementary particles with half-integer spin, the tau has a corresponding antiparticle of opposite charge but

render useful results. Each gene is assigned a number between 0 and 5, in half-integer increments. The Music Genome Project's database is built using a methodology

particles. Baryons are also classified as fermions because they have half-integer spin. The name "baryon", introduced by Abraham Pais,: 457  comes from

degree, m − 1⁄2, a half-integer, and argument, z, real and greater than one. This expression can be generalized for arbitrary half-integer powers as follows

Similar series may be obtained by exploring the Hurwitz zeta function at half-integer values. Thus, for example, one has ∑ k = 0 ∞ ζ ( k + n + 2 ) − 1 2 k

mass and arbitrary spin j, an integer for bosons (j = 1, 2, 3 ...) or half-integer for fermions (j = 1⁄2, 3⁄2, 5⁄2 ...). The solutions to the equations

baryons are a type of hadron (bound states of quarks and gluons) with half-integer spin, but with a quark content different from the three quarks (qqq)

{\displaystyle l=m/2} , where l {\displaystyle l} is then either an integer or a half-integer, and the dimension is 2 l + 1 {\displaystyle 2l+1} . The representations

flux bias. When the applied flux through the loop area is close to a half integer number of flux quanta, the two lowest energy eigenstates of the loop

when α = 1 {\displaystyle \alpha =1} and ν = {\displaystyle \nu =} half integer; Nakagami distribution, when α = 2 {\displaystyle \alpha =2} and ν >

possible eigenvalues under gradient along this dimension are integer or half-integer multiples of 1/L (depending on the precise boundary conditions). In quantum

symbols. In particle physics, a lepton is an elementary particle of half-integer spin (spin ⁠1/2⁠) that does not undergo strong interactions. Two main

meaning a pure-moire model of ASP function is insufficient. However, at half-integer multiples of the Talbot depth, the periodicity of the diffraction grating

statistics, which describes the behaviour of fermions, particles with half-integer spin. His 1930 monograph, The Principles of Quantum Mechanics, is one

mesons have integer spin (thus are bosons) while baryons are fermions (half-integer spin). Because mesons are bosons, the Pauli exclusion principle does

573), years (345), and days (a bit over 126,007). It is also close to a half-integer number of draconic months (4,630.53...), making it an eclipse period

and they are required to have an intrinsic spin of ⁠ 3 /2⁠ or higher (half-integer units). Ordinary nucleons (symbol N, meaning either a proton or neutron)

In superconductivity, a semifluxon is a half integer vortex of supercurrent carrying the magnetic flux equal to the half of the magnetic flux quantum Φ0

point in space. They are thus identified with forces. Fermions carry half-integer spin values, and by the Pauli exclusion principle, identical fermions

examine these formulae for toroidal harmonics, i.e. where the degree is half-integer, the order is integer, and the argument is positive and greater than

particles of arbitrary spin j, an integer for bosons (j = 1, 2, 3 ...) or half-integer for fermions (j = 1⁄2, 3⁄2, 5⁄2 ...). The solutions to the equations

the first 22 significant figures, each six-digit block is 7,874 or a half-integer multiple of it. 7,874 × 1.5 = 11,811 7,874 × 2.5 = 19,685 The pattern

which a certain number of synodic months closely equals an integer or half-integer number of draconic months: one such period after an eclipse, a syzygy

particles are either bosons (with integer spin) or fermions (with odd half-integer spin). Whereas the elementary particles that make up ordinary matter

integers, the associated symmetric form (over the rationals) may take half-integer values, while over Z / 2 Z , {\displaystyle \mathbb {Z} /2\mathbb {Z}

MHz or 50 MHz (set by the CPU daughtercard), and the CPU at integer or half-integer multiples of this speed. The bus can be temperamental with sensitivity

has half-integer values, such as ⁠1/2⁠ for an electron, then the total (orbital plus spin) angular momentum will also be restricted to half-integer values

between bosons and fermions is basic. Fermions are particles which have half integer spin (1/2, 3/2, 5/2 and so on, multiplied by the reduced Planck constant)

between bosons and fermions is basic. Fermions are particles which have half integer spin (1/2, 3/2, 5/2 and so on, multiplied by the reduced Planck constant)

{1}{1+{\frac {b^{2}}{(a+k)^{2}}}}}} If the real part is an integer or a half-integer, this can be finitely expressed in closed form: | Γ ( b i ) | 2 = π b

Hankinson, John; Sprinkle, Mike; Berger, Claire; de Heer, Walt A. (2009). "Half integer quantum Hall effect in high mobility single layer epitaxial graphene"

situations, the two metals are often best described as having the same half integer oxidation state. Verhoeven, J.W. (1996). "Glossary of terms used in photochemistry

fractional charge of the fractional quantum Hall effect and measuring the of half-integer thermal conductance quantum at filling fraction 5/2. For these discoveries

{\displaystyle e^{i(\sigma t+m\phi )}} (with m {\displaystyle m} being a half integer and with the convention R e { σ } > 0 {\displaystyle \mathrm {Re} \{\sigma

tensor fields. The ability of integer spin tensor fields to describe half integer spinor fields is explained by the fact that Lorentz transformations do

_{j,j'}\delta _{m,m'}.} Here the italicized j and m denote integer or half-integer angular momentum quantum numbers of a particle or of a system. On the

an odd number of quarks, they are also all fermions, i.e., they have half-integer spin. As quarks possess baryon number B = 1⁄3, baryons have baryon number

corresponding excitation energies, the half-integer total spin of the electronic shell (one outer electron) and half-integer total spin of the nucleus are coupled

representations are indexed by mass (nonnegative number) and spin (integer or half integer) and are associated with particles in quantum mechanics (see Wigner's

splitting is only possible for integer spins, and is certainly absent for half-integer spins, as ensured by Kramers degeneracy theorem. In real systems containing

band. Each site exhibits an intermediate oxidation state, which can be half-integer in value. This class is possible when the ligand environment is similar

after V. P. Maslov; it will be an integer if the path is a loop, and a half-integer in general. If this path arises from trivializing the symplectic vector

{\displaystyle I_{\alpha }(ab)=I_{-\alpha }(ab)} . For non-negative half-integer values ν = n + 1 / 2 {\displaystyle \nu =n+1/2} , we have a closed form

Kurita, N.; Tanaka, H.; Nasu, J. (July 2018). "Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid". Nature. 559 (7713):

ellipsoid method.: 248  However, if we add a requirement that f(e) must be half-integer (that is, f(e) must be in {0, 1/2, 1}), then the problem becomes NP-hard

may not be read off from a Lagrangian; they are also not necessarily (half)integer. For example, in the scale (and conformally) invariant theory describing

series was originally attributed to an unknown form of hydrogen with half-integer transition levels by both Pickering and Fowler, but Bohr correctly recognised

of particles is quantized. In particular, all particles have either half integer or integer spin. In the most general case, the eigenspinors for a system

(T_{s}-q_{s}^{1/2})(T_{s}+q_{s}^{-1/2})=0.} After extending the scalars to include the half-integer powers q±1/2 s the resulting Hecke algebra is isomorphic to the previously

forms a central part of quantum mechanics. The necessity of introducing half-integer spin goes back experimentally to the results of the Stern–Gerlach experiment

complexes are typically +2 or +3. The fact that the oxidation states are half-integer indicates that the two Ru(NH3)5 centers are equivalent in terms of their

moment and an associated with it spin. The spin can take integer or half-integer values, e.g. 1/2, 1, 3/2, etc., and the corresponding magnetic components

boson), as well as the Higgs boson. Fermions Fermions are particles with half-integer spin (s = 1/2, 3/2, 5/2, ... ). Like bosons, they can be elementary or

angle resolved photoemission spectroscopy (ARPES), the observation of a half-integer flux in tunneling experiments, and indirectly from the temperature dependence

mechanics, can be either a boson (with integer spin) or a fermion (with odd half-integer spin). In the Standard Model, all the elementary fermions have spin 1/2

is critical in understanding the distinction between integer spin and half-integer spin. The rotation group SO(3) is a compact Lie group and thus every

\mathbf {J} } and spin S {\displaystyle \mathbf {S} } , which can have half-integer values. Since the angular momenta are quantum operators, they cannot

which have integer spin (S = 0, 1, 2, ...), and fermions possessing half-integer spin (S = 1⁄2, 3⁄2, 5⁄2, ...). In quantum mechanics, two particles can

a given quantum system two or more identical particles with the same half-integer spins (that is, fermions) cannot simultaneously occupy the same quantum

when α = 1 {\displaystyle \alpha =1} and ν = {\displaystyle \nu =} half integer; Nakagami distribution, when α = 2 {\displaystyle \alpha =2} and ν >

disks of brass, a material made up largely of elements with a total half-integer nuclear spin. He claimed that by rapidly rotating a disk of such material

MPEG-2, motion vector values can either represent integer offsets or half-integer offsets. The match between the two regions will often not be perfect

superconductors". Kirtley, Tsuei, and co-workers used scanning SQUID imaging of the half-integer flux quantum effect in tricrystal samples to demonstrate that cuprate

critical result of quantum field theory that states that particles with half-integer spin are fermions, while particles with integer spin are bosons. In 1949

leaving a theorized diffuse supernova neutrino background. Neutrinos have half-integer spin (⁠ 1 /2⁠ħ); therefore they are fermions. Neutrinos are leptons;

(iso)-spin 4N+3/2 can have the new SU(2) anomaly. For fermions in the half-integer spin representation, it is shown that there are only these two types

with integer coefficients (so the associated symmetric matrix may have half-integer coefficients off the diagonal) This debate was due to the confusion of

Poincaré group are in many cases characterized by a nonnegative mass and a half-integer spin (see Wigner's classification); this can be thought of as the reason

direction periodically, every time the flux increases by additional half-integer multiple of Φ 0 {\displaystyle \Phi _{0}} , with a change at maximum

distribution. It can also be found in Fermi–Dirac statistics (for particles of half-integer spin) and Bose–Einstein statistics (for particles of integer spin). All

being restricted to integer or half-integer multiples of ħ, the reduced Planck constant. The integer or half-integer quantum number associated with the

observation (lines at 4551, 5411, and 10123 Å) to a new form of hydrogen with half-integer transition levels. In 1912, Alfred Fowler managed to produce similar

Lagrangian for fermionic strings (i.e. those with fermionic excitations, half-integer spin). Previously, the Nambu-Goto action had been known for the bosonic

comparable to that of mechanically cleaved graphene, as observation of the half-integer quantum Hall effect in CVD-grown graphene. The group reported observation

of the electron and hole. Electrons and holes are both fermions with half integer spin. An exciton is formed by the coulombic attraction between the electron

superconductivity (d-wave superconductivity in the presence of d-density waves) and half-integer flux quanta in unconventional superconductors. Kazumi Maki was elected

and the electron's spin was discovered, leading to the confusion of half-integer quantum numbers. Max Planck introduced the zero point energy and Arnold

\qquad \psi _{1}(3)={\frac {\pi ^{2}}{6}}-{\frac {5}{4}}.} At positive half integer values we have that ψ 1 ( n + 1 2 ) = π 2 2 − 4 ∑ k = 1 n 1 ( 2 k − 1

distinguishes the two types of elementary particles: fermions, with half-integer spins; and bosons, with integer spins. Photons, which are the quanta

SU ( 2 ) {\displaystyle {\text{SU}}(2)} is determined by the single half-integer number s =: n / 2 {\displaystyle s=:n/2} , the isospin. Since irreducible

Stern-Gerlach experiment (1922), which demonstrated the existence of half-integer quantum numbers in electron spin, he also found them in the rotation

that does not have a unique ground state is one whose net spin is a half-integer, for which time-reversal symmetry gives two degenerate ground states

several storage pithoi. He attempted to assign the volumes to integer or half-integer multiples of these units. Some pithoi were used for rituals and even

framework that relates bosons and fermions, particles with integer and half-integer spin, respectively. Extended supersymmetry involves multiple supersymmetry

In theoretical physics, a source is an abstract concept, developed by Julian Schwinger, motivated by the physical effects of surrounding particles involved

electrical resistivity at low temperatures. The equivalent model for half-integer particles (like electrons or helium-3 atoms), that follow Fermi–Dirac

Creation/annihilation operators are different for bosons (integer spin) and fermions (half-integer spin). This is because their wavefunctions have different symmetry properties

the quantized magnetoelectric effect, image magnetic monopole, and the half-integer quantum Hall effect.: 57  The local structure, as well as the structure

behind a double slit. In practice the critical current is not zero at half integer values of the flux quantum of the applied flux. This is due to the fact

}t^{z-1}e^{-t}dt} is the gamma function. This shows why the factorial of a half-integer is a rational multiple of π {\textstyle {\sqrt {\pi }}} . More generally

Only 31P is stable and is therefore present at 100% abundance. The half-integer nuclear spin and high abundance of 31P make phosphorus-31 nuclear magnetic

Connection between spin and statistic — fields that transform according to half integer spin anticommute, while those with integer spin commute (axiom W3). There

signals in NMR. Atoms with an odd sum of protons and neutrons exhibit half-integer values for the nuclear spin quantum number (I = 1/2, 3/2, 5/2, and so

(This observation is related to the distinction between integer spin and half-integer spin in quantum mechanics.) On the other hand, the group SU(2) is simply

and resistivity become zero. Instead, when ν {\displaystyle \nu } is a half-integer, the Fermi energy is located at the peak of the density distribution

means that the relevant quantum number is J, where J = L + S. When J is half-integer, the character for a rotation by an angle of α + 2π radians is equal

all particles with integer spin are bosons whereas all particles with half-integer spin are fermions. The exchange operator commutes with the Hamiltonian

, 0 ) {\displaystyle \left(\pm 1,0,0,0\right)} and 16 vertices with half-integer coordinates of the form: ( ± 1 2 , ± 1 2 , ± 1 2 , ± 1 2 ) {\displaystyle

fermionic extension. These two fermionic extensions involve fields with half-integer spins, and they are related to one another by a parity-shift operation

R_{n}^{(jk)}=-R_{n}^{(kj)}} , where n ∈ ℤ is an integer and m ∈ ℤ+1/2 is a half-integer and j,k=1,...,d label the spatial direction, in d spatial dimensions

by virtue of their integer spin, bosons (as opposed to fermions with half-integer spin). By the spin-statistics theorem, all bosons obey Bose–Einstein

\ell } always takes on integer values (for bosonic representations) or half-integer values (for fermionic representations). For a given value of ℓ {\displaystyle

fermions. A Fermion, named after Enrico Fermi, is a particle with a half-integer spin, such as electrons and protons. This is a matter particle. A boson

universe was about one second old.: 244–266  A lepton is an elementary, half-integer spin particle that does not undergo strong interactions but is subject

by a parameter l {\displaystyle l} that is a non-negative integer or half integer; the representation then has dimension 2 l + 1 {\displaystyle 2l+1}

to the quantum point contact lifts the spin degeneracy and leads to half-integer steps in the conductance. In addition, the number N {\displaystyle N}

orbital angular momentum has integer values, J may be an integer or a half integer number. Electric and magnetic multipole radiations of the same order

value of u indicates the presence of heteroatoms in the molecule and a half-integer value of u indicates the presence of an odd number of nitrogen atoms

quantum number, I. Nuclei with odd mass number are fermions and had half integer I. For the case of H2, rotation exchanges a single pair of fermions and

{\boldsymbol {J}}^{2}=-j(j+1){\boldsymbol {I}}_{2j+1},} where j is integer or half-integer, and referred to as the spin or angular momentum. So, the 3 × 3 generators

is intimately connected to the distinction between integer spin and half-integer spin in quantum mechanics. Other examples of simply connected Lie groups

centrally symmetric around the origin contains a nonzero point of the half-integer lattice Croft, Hallard T.; Falconer, Kenneth J.; Guy, Richard K. (1991)

their spin. It states that bosons have integer spin, and fermions have half-integer spin. Anyons possess fractional spin. The above discussion generalizes

here is the spin–statistics theorem, which demands that fermions have half-integer spin; however, it is a theorem of relativistic 3+1-dimensional quantum

network edges) were labelled by positive real numbers as opposed to the half-integer labels of SU(2) spin networks. These and other considerations, including

momentum quantum number j {\displaystyle j} needs to be a non-negative half-integer multiple of ħ. Chevalley basis Fuchs, Jurgen (1992), Affine Lie Algebras

generated by s i , b i {\displaystyle s_{i},b_{i}} . An algebra with a half-integer index k + 1 2 {\displaystyle k+{\frac {1}{2}}} is defined from partitions

integer spin such as one or two, and fermion particles that have odd, half-integer spins.” Emily Buchanan is young executive working for the investment

have integer-based values for total angular momentum, but can also have half-integer values. In molecules the total angular momentum F is the sum of the rovibronic

spherical harmonics, and the radial components are Bessel functions of half-integer order. The inhomogeneous wave equation in one dimension is u t t ( x

series" of lines followed a pattern similar to the Balmer series when half-integer quantum numbers were substituted. It was later shown that these lines

Equilibrium thermal distributions for particles with integer spin (bosons), half integer spin (fermions), and classical (spinless) particles. Average occupancy

choosing a handedness convention on spacetime. The necessity of introducing half-integer spin goes back experimentally to the results of the Stern–Gerlach experiment

}}\right)^{s}f\left(z,{\bar {z}}\right).} This makes sense provided s is a half-integer. Abstractly, B(s) is isomorphic to the smooth vector bundle underlying

the d-wave pairing symmetry to give rise to a spontaneously generated half-integer quantum vortex at the tricrystal meeting point. Furthermore, the possibility

theorem to arbitrary graphs as follows. Let n be any positive integer or half-integer. Any family of 2n fractional-matchings (=colors) of size at least n in

the roots of the Lie algebra, those of the spin representations are half-integer linear combinations thereof. Explicit details can be found in the spin

has one of its axes of symmetry parallel to the coordinate axes on a half-integer line. Its width, approximately 1.54, is the root of a degree-6 polynomial

There also exist fermionic CFTs that include fermionic fields with half-integer conformal spins S ∈ 1 2 + Z {\displaystyle S\in {\tfrac {1}{2}}+\mathbb

r} are integers, this sector has a branch cut while the NS sector has half-integer r {\displaystyle r} and so no branch cut. The operator product expansion

December 2017. Frydman, L; Harwood, JS (1995). "Isotropic Spectra of Half-Integer Quadrupolar Spins from Bidimensional Magic-Angle Spinning NMR". Journal

representation being the Pauli matrices. The holonomy is labelled by a half integer N / 2 {\displaystyle N/2} according to the irreducible representation

z-projection spin quantum number s can take all positive and negative half-integer values. There are rotational matrices for each spin quantum number. Evaluating

momentum quantum number J {\displaystyle J} is a positive integer or half-integer. Considering the microscopic magnetic moments of the material. The magnetization

underlying one-particle Hilbert spaces. Specifically: Fermions, having half-integer spin and obeying the Pauli exclusion principle, correspond to antisymmetric

the Chern–Simons level is even. In the case n=1, this statement is the half-integer quantization condition in N = 1 {\displaystyle {\mathcal {N}}=1} supersymmetric

multiplication table that can be used to multiply numbers (any whole or half integer) up to 99.5. Joseph Dauben of the City University of New York called

PMID 17638585. Frydman Lucio; Harwood John S (1995). "Isotropic Spectra of Half-Integer Quadrupolar Spins from Bidimensional Magic-Angle Spinning NMR". J. Am

l + 1 / 2 ) {\textstyle (l+1/2)} . This kind of Hankel transform of half-integer order is also known as the spherical Bessel transform. If a d-dimensional

Lorentz group, the (m, n)-representation is projective when m + n is a half-integer. See § Spinors. For a projective representation Π of SO(3; 1)+, it holds

m − 1 2 ( χ ) {\displaystyle Q_{m-{\frac {1}{2}}}(\chi )} is the odd-half-integer degree Legendre function of the second kind, which is a toroidal harmonic

(n)=H_{n-1}-\gamma ,} where H0 = 0, and γ is the Euler–Mascheroni constant. For half-integer arguments the digamma function takes the values ψ ( n + 1 2 ) = − γ −

{\pi s}{2}}\right)\Gamma (1-s)\zeta (1-s)} We have simple relations for half-integer arguments ζ ( 3 / 2 ) ζ ( − 1 / 2 ) = − 4 π ζ ( 5 / 2 ) ζ ( − 3 / 2 )

number of spin-1/2 particles, then the resultant nuclear spin should be half-integer. Kronig therefore suggested that perhaps "protons and electrons do not

properties of the electron include an intrinsic angular momentum (spin) of a half-integer value, expressed in units of the reduced Planck constant, ħ. Being fermions

Solutions of the Wave-Equation 1994 Localized Rotating Wavelets with Half-Integer Spin 1994 Algebraic Perturbation-Theory for Singular Potentials 1995

(also known as the m sector)). Sachdev showed that antiferromagnets with half-integer spin form odd Z2 spin liquids, and those with integer spin form even

the Hurwitz zeta function (see below). Some particular expressions for half-integer values of the argument z are: Li 1 ⁡ ( 1 2 ) = ln ⁡ 2 {\displaystyle

material to scratch another and quantified by an integer (sometimes half-integer) from 0 to 10 on the Mohs scale. This scale was however quickly found

Hamburger, who noted that it follows from the following stronger claim: the half-integer valued index of the principal curvature foliation of an isolated umbilic

properties of graphene like the Dirac nature of the charge carriers, half-integer quantum Hall effect or the observation of the 2D electron gas behaviour

for every energy eigenstate of a time-reversal symmetric system with half-integer total spin, there is at least one more eigenstate with the same energy

und          n = | M 2 − M ′ 2 | {\displaystyle n=|M^{2}-M'^{2}|} For half integer spins applies: ω Q 0 = 6 ⋅ ω Q {\displaystyle \omega _{Q}^{0}=6\cdot

Hankinson, John; Sprinkle, Mike; Berger, Claire; de Heer, Walt A. (2009). "Half integer quantum Hall effect in high mobility single layer epitaxial graphene"

representation being the Pauli matrices. The holonomy is labelled by a half integer N / 2 {\displaystyle N/2} according to the irreducible representation

Hankinson, John; Sprinkle, Mike; Berger, Claire; de Heer, Walt A. (2009). "Half integer quantum Hall effect in high mobility single layer epitaxial graphene"

{\displaystyle \chi } , for rotation, by an angle α, of a wavefunction for half-integer angular momentum is given by χ J ( α ) = sin ⁡ [ J + 1 / 2 ] α sin ⁡

The invariance under diffeomorphisms (or coordinate change) of the half-integer Sobolev spaces on the circle follows from the fact that an equivalent

particles like deuterium follow Bose–Einstein statistics while fermions with half-integer spins follow Fermi–Dirac statistics. Wave functions that describe multiple

rule in quantum mechanics stating that no two fermions (particles with half-integer spin such as electrons or quarks) can occupy the same quantum state simultaneously

between the HOMO and LUMO. As electrons and holes are fermions with half integer spin, an exciton may either be in a singlet state or a triplet state