A modification of Faddeev-Popov approach free from Gribov ambiguity

TL;DR

This paper introduces a modified Faddeev-Popov quantization method for non-Abelian gauge theories that naturally eliminates Gribov ambiguities by using a new identity insertion technique and a local Lagrangian with a BRST-like symmetry.

Contribution

It presents a novel approach to remove Gribov ambiguities in gauge fixing by modifying the Faddeev-Popov procedure with a new identity insertion and local Lagrangian formulation.

Findings

Successfully removes Gribov ambiguity in non-Abelian gauge theories.

Derives a local Lagrangian with a nilpotent symmetry similar to BRST.

Provides a consistent quantization method avoiding Gribov copies.

Abstract

We propose a modified version of the Faddeev-Popov quantization approach for non-Abelian gauge field theory to avoid the Gribov ambiguity. We show that by means of introducing a new method to insert the correct identity into the Yang-Mills generating functional and considering the identity generated by an integral through a subgroup of the gauge group, the problem of the Gribov ambiguity can be removed naturally. Meanwhile by handling the absolute value of the Faddeev-Popov determinant with the method introduced by Williams and collaborators, we lift the Jacobian determinant together with the absolute value and obtain a local Lagrangian. The new Lagrangian have a nilpotent symmetry which can be viewed as an analogue of the BRST symmetry.