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arXiv · hep-th/9703198

BPS States in Superstrings with Spontaneously Broken SUSY

Costas Kounnas
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Abstract

We show the existence of a supersymmetry-breaking mechanism in string theory, where N=4 supersymmetry is broken spontaneously to N=2 and N=1 with moduli-dependent gravitino masses. The BPS spectrum of the theory with lower supersymmetry is in one-to-one correspondence with the spectrum of the heterotic N=4 string. The mass splitting of the N=4 spectrum depends on the moduli as well as the three R-symmetry charges. In the case of N=4 \to N=2, the perturbative N=2 prepotential is determined by the perturbative N=4 BPS states. This observation led us to suggest a method that determines the exact non-perturbative prepotential of the effective N=2 supergravity using the shifted spectrum of the non-perturbative BPS states of the underlying N=4 theory.

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Costas Kounnas. 1997-03-27. BPS States in Superstrings with Spontaneously Broken SUSY. https://doi.org/10.1016/s0920-5632(97)00413-1

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