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searching for Local symmetry 37 found (45 total)

Symmetry (physics) (3,224 words) [view diff] exact match in snippet view article

that is applied simultaneously at all points of spacetime, whereas a local symmetry is one that keeps a property invariant when a possibly different symmetry

Conway polyhedron notation (2,626 words) [view diff] exact match in snippet view article find links to article

of the dihedral groups. Achiral and chiral operators are also called local symmetry-preserving operations (LSP) and local operations that preserve orientation-preserving

Cartan matrix (1,286 words) [view diff] exact match in snippet view article find links to article

the area of the two-cycles go to zero. At this limit, there appears a local symmetry group. The matrix of intersection numbers of a basis of the two-cycles

Goldstino (306 words) [view diff] exact match in snippet view article find links to article

responsible for dark matter). In theories where supersymmetry is a local symmetry, the goldstino is absorbed by the gravitino, the gauge field it couples

Vector meson dominance (922 words) [view diff] exact match in snippet view article find links to article

"dual" description. One such popular description is that of the hidden local symmetry. The dual description is based on the idea of emergence of gauge symmetries

Rho meson (632 words) [view diff] exact match in snippet view article find links to article

QCD); Note that this broken gauge symmetry (sometimes called hidden local symmetry) is distinct from the global chiral symmetry acting on the flavors.

Charge (physics) (1,210 words) [view diff] no match in snippet view article

in the current is the "charge", the charge is the generator of the (local) symmetry group. This charge is sometimes called the Noether charge. Thus, for

Isospin (3,540 words) [view diff] exact match in snippet view article find links to article

nucleons. Attempts have been made to promote isospin from a global to a local symmetry. In 1954, Chen Ning Yang and Robert Mills suggested that the notion

Quantum field theory (14,309 words) [view diff] exact match in snippet view article find links to article

local symmetry of QED, leading to non-Abelian gauge theories (also known as Yang–Mills theories), which are based on more complicated local symmetry groups

Topological insulator (6,965 words) [view diff] no match in snippet view article find links to article

from a global property of the topological insulator's band structure, local (symmetry-preserving) perturbations cannot damage this surface state. This is

Tetranitromethane (1,292 words) [view diff] exact match in snippet view article find links to article

experimental observations fully. The problem occurs, because the two-fold local symmetry of the C−NO2 units versus the three-fold symmetry of the C(NO2)3 unit

Peter Higgs (4,726 words) [view diff] exact match in snippet view article find links to article

Goldstone's theorem (massless Goldstone particles need not occur when local symmetry is spontaneously broken in a relativistic theory) and published it in

Current algebra (792 words) [view diff] exact match in snippet view article find links to article

governing hadron dynamics in detail, exact kinematical information – the local symmetry – could still be encoded in an algebra of currents. The commutators

E7 (mathematics) (2,577 words) [view diff] exact match in snippet view article

supergravity, admit an E7 bosonic global symmetry and an SU(8) bosonic local symmetry. The fermions are in representations of SU(8), the gauge fields are

Gradient pattern analysis (573 words) [view diff] exact match in snippet view article find links to article

on the statistical properties of the data but depends solely on the local symmetry properties of the correspondent gradient pattern. For a complex extended

Symmetry in quantum mechanics (7,506 words) [view diff] exact match in snippet view article find links to article

quantum electrodynamics, the local symmetry group is U(1) and is abelian. In quantum chromodynamics, the local symmetry group is SU(3) and is non-abelian

E6 (mathematics) (3,682 words) [view diff] exact match in snippet view article

supergravity, admits an E6 bosonic global symmetry and an Sp(8) bosonic local symmetry. The fermions are in representations of Sp(8), the gauge fields are

Frank–Kasper phases (914 words) [view diff] exact match in snippet view article find links to article

directions where the five-fold icosahedral symmetry is replaced by six-fold local symmetry. The sites of 12-coordination are called minor sites and those with

Higgs boson (26,078 words) [view diff] no match in snippet view article find links to article

remain symmetrical, but the "Mexican hat" potential comes into effect: "local" symmetry inevitably becomes broken since eventually the ball must at random

Supersymmetry (7,489 words) [view diff] exact match in snippet view article find links to article

become mathematically tractable. When supersymmetry is imposed as a local symmetry, Einstein's theory of general relativity is included automatically,

Synchrotron light source (3,298 words) [view diff] exact match in snippet view article find links to article

structure (NEXAFS)) reveals information about the chemical state and local symmetry of that element. At incident beam energies which are much higher than

M-theory (7,711 words) [view diff] exact match in snippet view article find links to article

which is a fermion, and vice versa. When supersymmetry is imposed as a local symmetry, one automatically obtains a quantum mechanical theory that includes

Gluon field (1,464 words) [view diff] exact match in snippet view article find links to article

the SU(3) gauge group obtained by taking the color charge to define a local symmetry: each Gell-Mann matrix corresponds to a particular gluon color charge

Nuclear magnetic resonance (9,921 words) [view diff] exact match in snippet view article find links to article

shifted "downfield" (that is, a higher chemical shift). Unless the local symmetry of such molecular orbitals is very high (leading to "isotropic" shift)

Quasicrystal (5,253 words) [view diff] exact match in snippet view article find links to article

polygonal (dihedral) quasicrystals, have an axis of 8-, 10-, or 12-fold local symmetry (octagonal, decagonal, or dodecagonal quasicrystals, respectively).

Noether's theorem (10,188 words) [view diff] exact match in snippet view article find links to article

theorem to larger Lie algebras in a natural way. This applies to any local symmetry derivation Q satisfying QS ≈ 0, and also to more general local functional

Dirac equation (11,971 words) [view diff] exact match in snippet view article find links to article

symmetry, parametrised by the constant α{\displaystyle \alpha }, to a local symmetry, parametrised by a function α:R1,3→R{\displaystyle \alpha :\mathbb {R}

Magnetoelectric effect (2,545 words) [view diff] exact match in snippet view article find links to article

spins (such as easy axes). An external electric field may change the local symmetry seen by magnetic ions and affect both the strength of the anisotropy

Elitzur's theorem (1,380 words) [view diff] exact match in snippet view article find links to article

is a consequence of Noether's second theorem which states that each local symmetry degree of freedom corresponds to a relation among the Euler–Lagrange

Ali Chamseddine (1,382 words) [view diff] exact match in snippet view article find links to article

supersymmetric standard model to supergravity, making the supersymmetry a local symmetry, and employing the super Higgs mechanism and developing the rules of

Karin Melnick (671 words) [view diff] exact match in snippet view article find links to article

Her dissertation research focused on compact Lorentz manifolds with local symmetry. Prior to her graduate studies, Melnick received her Bachelor of Arts

Goldberg–Coxeter construction (1,858 words) [view diff] exact match in snippet view article find links to article

"Goldberg, Fuller, Caspar, Klug and Coxeter and a general approach to local symmetry-preserving operations". Proceedings of the Royal Society A. 473 (2206):

Low-energy electron diffraction (4,728 words) [view diff] exact match in snippet view article find links to article

respective LEED pattern are shown in Figure 7. It is apparent that the local symmetry of the surface structure is twofold while the LEED pattern exhibits

Woodward–Hoffmann rules (11,807 words) [view diff] no match in snippet view article find links to article

the molecules in half perpendicular to the σ-bonds. These are both local-symmetry elements in the case that the components are not identical. To determine

Bunkbed conjecture (486 words) [view diff] exact match in snippet view article find links to article

wheels, complete graphs, complete bipartite graphs and graphs with a local symmetry. It was also proven in the limit p→1{\displaystyle p\to 1} for any graph

Bumblebee models (3,093 words) [view diff] exact match in snippet view article find links to article

appears as massless Nambu–Goldstone modes. Because Lorentz symmetry is a local symmetry in the presence of gravity, the possibility of a Higgs mechanism arises

Difluorophosphate (2,755 words) [view diff] exact match in snippet view article find links to article

oxyfluorés du phosphore(V). I. Les difluorodioxophosphates (DFP) alcalins" [Local symmetry force-field of oxyfluorine compounds of phosphorus(V). I. Alkali