New forms of brst symmetry in rigid rotor

Abstract

We derive the different forms of BRST symmetry by using the BatalinFradkinVilkovisky formalism in a rigid rotor. The so-called "dual-BRST" symmetry is obtained from the usual BRST symmetry by making a canonical transformation in the ghost sector. On the other hand, a canonical transformation in the sector involving Lagrange multiplier and its corresponding momentum leads to a new form of BRST as well as dual-BRST symmetry. © 2010 World Scientific Publishing Company.