# Classical BRST Charge and Observables in Reducible Gauge Theories

Bratchikov, Andrei V. (Kuban State Technological University, Krasnodar 350072, Russia)

08 August 2017

Abstract: We study the construction of the classical Becchi--Rouet--Stora--Tyutin (BRST) charge and observables for arbitrary reducible gauge theory. Using a special coordinate system in the extended phase space, we obtain an explicit expression for the Koszul--Tate differential and show that the BRST charge can be found by a simple iterative method. We also give a formula for the classical BRST observables.

Published in: Acta Physica Polonica B 48 (2017) 1335-1348
Published by: Jagiellonian University
DOI: 10.5506/APhysPolB.48.1335
arXiv: 1203.1937
License: CC-BY-4.0

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