FeynCalc manual (development version)

DiracSlash

DiracSlash[p] is the contraction pμγμp^{\mu } \gamma _{\mu } (FV[p, mu] GA[mu]).

Products of those can be entered in the form GS[p1, p2, …].

The shortcut DiracSlash is deprecated, please use GS instead!

See also

Overview, GS, FCI.

Examples

This is qq-slash, i.e., γμqμ\gamma^{\mu} q_{\mu }

DiracSlash[q]

γˉq\bar{\gamma }\cdot \overline{q}

DiracSlash[p] . DiracSlash[q]

(γˉp).(γˉq)\left(\bar{\gamma }\cdot \overline{p}\right).\left(\bar{\gamma }\cdot \overline{q}\right)

DiracSlash[p, q]

(γˉp).(γˉq)\left(\bar{\gamma }\cdot \overline{p}\right).\left(\bar{\gamma }\cdot \overline{q}\right)

DiracSlash is scheduled for removal in the future versions of FeynCalc. The safe alternative is to use GS.

GS[p]

γˉp\bar{\gamma }\cdot \overline{p}

GSD[p]

γp\gamma \cdot p

FCI[GS[p]] === DiracSlash[p]

True\text{True}

FCI[GSD[p]] === DiracSlash[p, Dimension -> D]

True\text{True}