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A Four Dimensional Superstring from the Bosonic String with Some Applications

B. B. Deo, L. Maharana

hep-tharXiv:hep-th/0307172

Abstract

A string in four dimensions is constructed by supplementing it with forty four Majorana fermions. The later are represented by eleven vectors in the bosonic representation SO(D-1,1). The central charge is 26. The fermions are grouped in such a way that the resulting action is world sheet supersymmetric. The energy momentum and current generators satisfy the super-Virasoro algebra. GSO projections are necessary for proving modular invariance. Space-time supersymmetry algebra is deduced and is substantiated for specific modes of zero mass. The symmetry group of the model can descend to the low energy standard model group SU (3) × SUL (2) × UY (1) through the Pati-Salam group.

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