Speaker
Ms
Anne Ernst
(University of Hamburg, II. Theoretical Institute)
Description
Nielsen Identities are a generalisation of the Slavnov-Taylor identities which show the gauge parameter dependence of 1-PI diagrams. They are derived from a generalised BRST-invariance of the Lagrangian, in which the gauge parameter gets promoted to a scalar field. I will derive fermionic Nielsen Identities for generating functionals and proper vertex functions, and show how to use them both in general and in perturbation theory.
Author
Ms
Anne Ernst
(University of Hamburg, II. Theoretical Institute)
