Generalized String Functions of N=1 Space-Time Supersymmetric String Vacua

Details Generalized String Functions of N=1 Space-Time Supersymmetric String Vacua Generalized String Functions of N=1 Space-Time Supersymmetric String Vacua

1995-01-18

arxiv.org/abs/hep-th/9501072v1

Phys.Lett. B349 (1995) 63-70

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, plain TeX, no figures

Scientific paper

10.1016/0370-2693(95)00226-B

We present a dual formulation of the construction of N=2 nonlinear sigma-model type conformal field theories with c=9 which are mainly used as internal sectors of Calabi-Yau heterotic string compactifications. The supercurrents and the higher components of the spectral flow superfields turn out in each case to be tensor products of two simple currents of a c=1 and a non-supersymmetric parafermionic c=8 CFT. The characters of the latter model can be regarded as string functions of the coset sigma/U(1). In particular, for the (1)^9 Gepner model we discuss these string functions in detail, realizing this model contains a broken E_8 gauge symmetry of which only the abelian subalgebra remains a symmetry of the spectrum. As an example, we construct a simple model leading to a string theory with a massless spectrum of 36 E_6 generations and an extended gauge symmetry E_6 x SU(3)^4.

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