The Berkovits-Vafa Construction and Nonlinear Realizations

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    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.
    Original languageEnglish
    Pages (from-to)94-98
    JournalPhysics Letters B
    Publication statusPublished - 1995


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