feynlag.export.ufo.lorentz_map

UFO Lorentz structures for the closed v1 vertex catalog.

Structure strings follow the FeynRules/UFO index conventions: P(l, n) = momentum of leg n with Lorentz index l (indices are leg numbers); Metric(m, n); Gamma(l, s1, s2); ProjM/ProjP = P_∓. UFO spins are 2s+1: scalar 1, fermion 2, vector 3.

Module Attributes

UFO_LORENTZ

name → (spins, structure)

Functions

structures_for(vertex_type)

UFO lorentz names available for a feynlag catalog vertex type.