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helicity representation

См. также в других словарях:

  • Helicity (particle physics) — In particle physics, helicity is the projection of the spin vec S onto the direction of momentum, hat p ::h = vec Scdot hat p,qquad hat p = vec p / |vec p|Because the spin with respect to an axis has discrete values, helicity is discrete, too.… …   Wikipedia

  • Helicity basis — In the Standard Model, using quantum field theory it is conventional to use the helicity basis to simplify calculations (of cross sections, for example). In this basis, the spin is quantized along the axis in the direction of motion of the… …   Wikipedia

  • Representation theory of the Galilean group — In nonrelativistic quantum mechanics, an account can be given of the existence of mass and spin as follows:The spacetime symmetry group of nonrelativistic quantum mechanics is the Galilean group. In 3+1 dimensions, this is the subgroup of the… …   Wikipedia

  • Струтинский, Вилен Митрофанович — Эта страница требует существенной переработки. Возможно, её необходимо викифицировать, дополнить или переписать. Пояснение причин и обсуждение на странице Википедия:К улучшению/26 августа 2012. Дата постановки к улучшению 26 августа 2012. В… …   Википедия

  • Chirality (physics) — A chiral phenomenon is one that is not identical to its mirror image (see Chirality). The spin of a particle may be used to define a handedness (aka chirality) for that particle. A symmetry transformation between the two is called parity.… …   Wikipedia

  • Sterile neutrino — Composition Elementary particle Statistics Fermionic Generation all Interactions gravity; other potential unknown interactions Status Hypothetical …   Wikipedia

  • Top quark condensate — In particle physics, the top quark condensate theory is an alternative to the Standard Model in which a fundamental scalar Higgs field is replaced by a composite field composed of the top quark and its antiquark. The top quark is chosen because… …   Wikipedia

  • Neutrino theory of light — The neutrino theory of light is the proposal that the photon is a composite particle formed of a neutrino antineutrino pair. It is based on the idea that emission and absorption of a photon corresponds to the creation and annihilation of a… …   Wikipedia

  • Supergravity — In theoretical physics, supergravity (supergravity theory) is a field theory that combines the principles of supersymmetry and general relativity. Together, these imply that, in supergravity, the supersymmetry is a local symmetry (in contrast to… …   Wikipedia

  • Lorentz group — Group theory Group theory …   Wikipedia

  • Wigner's classification — In mathematics and theoretical physics, Wigner s classification is a classification of the nonnegative energy irreducible unitary representations of the Poincaré group, which have sharp mass eigenvalues. It was proposed by Eugene Wigner, for… …   Wikipedia

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