An action of the gluodynamics string from the Wilson loop expansion

TL;DR

This paper derives a string effective action in SU(2) gluodynamics using the nonabelian Stokes theorem and cumulant expansion, resulting in a rigid string interacting with Kalb-Ramond fields that avoids common issues of crumpling.

Contribution

It introduces a novel string model derived from gluodynamics that addresses crumpling and high-temperature issues of previous rigid string theories.

Findings

Existence of a phase without crumpling problems

String tension behaves correctly at high temperatures

Interaction with Kalb-Ramond fields stabilizes the string

Abstract

The nonabelian Stokes theorem, representing a Wilson loop as an integral over all the orientations in colour space, and the cumulant expansion are used for derivation of the string effective action in SU(2) gluodynamics. The obtained theory is the theory of the rigid string interacting with the rank two antisymmetric Kalb-Ramond fields. In this model there exists a phase where there are no problems of crumpling and wrong high temperature behaviour of the string tension, which are present in the free rigid string theory. The Langevin approach to stochastic quantization of the obtained theory is applied.