FeynCalc manual (development version)

PauliXi

PauliXi[I] represents a two-component Pauli spinor ξ\xi, while PauliXi[-I] stands for ξ\xi^{\dagger }.

See also

Overview, PauliEta.

Examples

PauliXi[I]

ξ\xi

PauliXi[-I]

ξ\xi ^{\dagger }

PauliXi[-I] . SIS[p] . PauliEta[I] 
 
% // ComplexConjugate 
  
 

ξ.(σˉp).η\xi ^{\dagger }.\left(\bar{\sigma }\cdot \overline{p}\right).\eta

η.(σˉp).ξ\eta ^{\dagger }.\left(\bar{\sigma }\cdot \overline{p}\right).\xi