Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1994-11-21
Phys.Lett. B342 (1995) 94-98
Physics
High Energy Physics
High Energy Physics - Theory
6 pages
Scientific paper
10.1016/0370-2693(94)01455-L
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.
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