BPS States in Superstrings with Spontaneously Broken Susy

  • Costas Kounnas
Part of the NATO ASI Series book series (NSSB, volume 363)

Abstract and Disclaimer

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 → 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.


Partition Function Modulus Space Gauge Group Gauge Boson Wilson Line 
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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Costas Kounnas
    • 1
  1. 1.Theory DivisionCERNGeneva 23Switzerland

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