Abstract

Starting from a definition of a hyperelliptic superRiemann surface (HESS), we study its supermoduli space and the “superVirasoro” algebra on it. We map that algebra into a Z 4 p=2 parafermionic algebra on CP 1,1. Using explicitly supersymmetric bosonization of the first-order superconformal systems, we construct explicitly the primary fields of the parafermionic algebra: the branching and the spin operators. We give a simple prescription for the calculation of sdet D γ on HESS through correlation functions of these branching operators. As an example, we calculate the g = 2 superstring partition function and verify that the cosmological constant vanishes, after integration over the moduli space.

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