Description

QuantumField is the head of quantized fields and their derivatives. QuantumField[par, ftype, {lorind}, {sunind}] denotes a quantum field of type ftype with (possible) Lorentz-indices lorind and SU(N)-indices sunind. The optional first argument par denotes a partial derivative acting on the field.

See also: FeynRule, PartialD, ExpandPartialD.

Examples

This denotes a scalar field.

This is a field with a Lorentz index.

Color indices should be put after the Lorentz ones.

is a short form for

The first list of indices is usually interpreted as type LorentzIndex, except for OPEDelta, which gets converted to type Momentum.

Derivatives of fields are denoted as follows.

The FeynCalc Book

PropagatorDenominatorExplicit

QuarkField