BRST Invariance of Non-local Charges and Monodromy Matrix of Bosonic String on AdS(5)xS(5)

TL;DR

This paper develops a BRST formalism for the bosonic string on AdS(5)xS(5) using the Hamiltonian method, demonstrating that key integrability objects like the monodromy matrix are BRST invariant.

Contribution

It introduces a BRST formalism for the bosonic string on AdS(5)xS(5) as a principal chiral model and proves the BRST invariance of the monodromy matrix and non-local charges.

Findings

Monodromy matrix is BRST invariant.

Non-local charges are BRST invariant.

Formalism applies Hamiltonian method to string theory.

Abstract

Using the generalized Hamiltonian method of Batalin, Fradkin and Vilkovsky we develop the BRST formalism for the bosonic string on AdS(5)xS(5) formulated as principal chiral model. Then we show that the monodromy matrix and non-local charges are BRST invariant.