The Berkovits-Vafa Construction and Nonlinear Realizations

Abstract

Berkovits and Vafa recently showed that critical string theories can be considered as critical superstring theories with a special choice of background. The embedding of the Virasoro algebra into the super-Virasoro algebra involved in this construction has been extended to the noncritical case by Berkovits and Ohta. It is shown that the resulting nonlinear realization of the super-Virasoro algebra can be interpreted using standard techniques from the theory of nonlinear realizations. This extends earlier work of Kunitomo.

6 pages

References in corpus (2)

• On the Uniqueness of String Theory
• Embeddings for Non-Critical Superstrings

Cited by in corpus (3)

• M-Theory Through the Looking Glass: Tachyon Condensation in the E_8 Heterotic String
• Gauging of Nonlinearly Realized Symmetries
• On the equivalence of fermionic string to bosonic string in two dimensions