Conveners
Wednesday Morning Session 1: Gauge Invariance
- Jon-Ivar Skullerud
During this talk, we consider both Abelian and non-Abelian (fundamental) Higgs theories. We first focus on the elementary field two-point correlations functions and study the gauge dependence of the spectral functions. An equivalent but gauge invariant formulation of the spectrum is worked out, including renormalization and spectral properties. We end with a proposal to a priori introduce...
Abstract
An essential aspect of gauge theories is that all physical observable quantities have to be gauge-invariant. In practice, however, the explicit calculations of the S-matrix elements and corresponding cross sections are done by employing the non-gauge-invariant elementary fields. This is not always problematic, as sometimes gauge independence is guaranteed by symmetry identities. In...
