BPS States in Superstrings with Spontaneously Broken SUSY

Details BPS States in Superstrings with Spontaneously Broken SUSY BPS States in Superstrings with Spontaneously Broken SUSY

1997-03-27

arxiv.org/abs/hep-th/9703198v1

Nucl.Phys.Proc.Suppl. 58 (1997) 57-78

Physics

High Energy Physics

High Energy Physics - Theory

30 pages, Latex, uses epsf.sty

Scientific paper

10.1016/S0920-5632(97)00413-1

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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