Pohlmeyer-reduced form of string theory in AdS5×S5: semiclassical expansion

B Hoare, Y Iwashita, A A Tseytlin
2009 Journal of Physics A: Mathematical and Theoretical  
We consider the Pohlmeyer-reduced formulation of the AdS_5 x S^5 superstring. It is constructed by introducing new variables which are algebraically related to supercoset current components so that the Virasoro conditions are automatically solved. The reduced theory is a gauged WZW model supplemented with an integrable potential and fermionic terms that ensure its UV finiteness. The original superstring theory and its reduced counterpart are closely related at the classical level, and we
more » ... ure that they remain related at the quantum level as well, in the sense that their quantum partition functions evaluated on respective classical solutions are equal. We provide evidence for the validity of this conjecture at the one-loop level, i.e. at the first non-trivial order of the semiclassical expansion near several classes of classical solutions.
doi:10.1088/1751-8113/42/37/375204 fatcat:lnwfwl6qsrfono6hc7h7lxvmmm