Spinor

Description

Spinor[p, m, optarg] is the head of Dirac spinors. Which of the spinors u, v, \(TraditionalForm\`u\&_\) , or \(TraditionalForm\`\(\(v\&_\)\(\ \)\)\)is understood, depends on the sign of the momentum (p) argument and the relative position of DiracSlash[p]: Spinor[sign p, mass] is that spinor which yields: sign*mass*Spinor[p, mass] if the Dirac equation is applied (by DiracEquation or DiracSimplify).

See also:  DiracSimplify, SpinorU, SpinorV, SpinorUBar, SpinorVBar.

Examples

Spinor[p]

Spinor[p, m]

DiracSimplify[Spinor[-p, m] . DiracSlash[p]]

Spinor[p] // StandardForm

ChangeDimension[Spinor[p], D] // StandardForm

Spinor[p, m] // StandardForm

Spinor[p, SmallVariable[m]] // StandardForm