FeynCalc manual (development version)

SpinorUBar

SpinorUBar[p, m] denotes a \bar{u}(p,m)-spinor that depends on the 4-dimensional momentum p.

See also

Overview, Spinor, SpinorU, SpinorV, SpinorVBar, SpinorUBarD, SpinorUD, SpinorVD, SpinorVBarD.

Examples

SpinorUBar[p, m]

\bar{u}(p,m)

SpinorUBar[p, m] // FCI // StandardForm

(*Spinor[Momentum[p], m, 1]*)

SpinorUBar[p]

\bar{u}(p)

SpinorUBar[p] // FCI // StandardForm

(*Spinor[Momentum[p], 0, 1]*)

SpinorUBar[p] . GS[p] 
 
DiracEquation[%]

\bar{u}(p).\left(\bar{\gamma }\cdot \overline{p}\right)

0