Phrase Hound found 28 phrases and 1 compound words that contain dirac. The most common are listed below. Open dirac in the live search for definitions, filters, and the full list.
Phrases 28
- Dirac delta functionA function of one real argument, whose value is zero when the argument is nonzero, and whose integral is one over any interval that includes zero.
- Dirac equationA relativistic wave equation that describes an electron (and similar particles); it predicted the existence of antiparticles
- Dirac combA periodic tempered distribution constructed from Dirac delta functions for some given period. It allows both continuous and discrete phenomena to be represented in a single framework.
- Dirac coneA surface in materials such as graphene that exhibits unusual electron transport
- Dirac constantPlanck's constant divided by 2π, symbolized ℏ; the quantum of angular momentum and spin.
- Dirac deltaA function-like symbol denoted as δ, with the property ∫f(t)δ(x-t)dt=f(x), informally understood as a function with an infinite value at 0 and zero elsewhere, and formally as a distribution or a measure.
- Dirac fieldA fermionic field which consists of a 4-component spinor or a pair of 2-component Weyl spinors.
- Dirac notationThe notation used in writing bra-kets.
- Dirac particleAny of the spin-1/2 massive particles described by the Dirac equation.
- Dirac pictureSynonym of interaction picture: An intermediate representation between the Schrödinger picture and the Heisenberg picture, useful in dealing with changes to the wave functions and observables due to interactions.
- Dirac pointA point where Dirac cones meet.
- Dirac seaA theoretical model of the vacuum as an infinite sea of particles with negative energy.
- Dirac stringA hypothetical one-dimensional curve in space, stretching between two Dirac magnetic monopoles with opposite magnetic charges, or from one magnetic monopole out to infinity.
- Dirac fermionAny fermion that is not its own antiparticle
- Dirac fermionsplural of Dirac fermion: Any fermion that is not its own antiparticle
- Dirac delta functionsplural of Dirac delta function: A function of one real argument, whose value is zero when the argument is nonzero, and whose integral is one over any interval that includes zero.
- Fermi-Dirac statisticsA kind of quantum statistics that applies to the physics of a system consisting of many noninteracting identical particles that obey the Pauli exclusion principle.
- Fermi-Dirac distribution functionA function that states the probability of one of a set of independent fermions will occupy a given energy level when thermal equilibrium exists.
- Kapitza-Dirac effectThe diffraction of matter by a standing wave of light.
- Dirac combsplural of Dirac comb: A periodic tempered distribution constructed from Dirac delta functions for some given period. It allows both continuous and discrete phenomena to be represented in a single framework.
- Dirac conesplural of Dirac cone: A surface in materials such as graphene that exhibits unusual electron transport
- Dirac equationsplural of Dirac equation: A relativistic wave equation that describes an electron (and similar particles); it predicted the existence of antiparticles
- Dirac picturesplural of Dirac picture: An intermediate representation between the Schrödinger picture and the Heisenberg picture, useful in dealing with changes to the wave functions and observables due to interactions.
- Dirac seasplural of Dirac sea: A theoretical model of the vacuum as an infinite sea of particles with negative energy.
- Dirac stringsplural of Dirac string: A hypothetical one-dimensional curve in space, stretching between two Dirac magnetic monopoles with opposite magnetic charges, or from one magnetic monopole out to infinity.
Compound words 1
- DiracianOf or relating to the physicist Paul Dirac.