Supersymmetric Vacuum Configurations in String Cosmology

Abstract

We examine in a cosmological context the conditions for unbroken supersymmetry in N=1 supergravity in D=10 dimensions. We show that the cosmological solutions of the equations of motion obtained considering only the bosonic sector correspond to vacuum states with spontaneous supersymmetry breaking. With a non vanishing gravitino-dilatino condensate we find a solution of the equations of motion that satisfies necessary conditions for unbroken supersymmetry and that smoothly interpolates between Minkowski space and DeSitter space with a linearly growing dilaton, thus providing a possible example of a supersymmetric and non-singular pre-big-bang cosmology.

4 pages, Latex, 2 figures

References in corpus (4)

• A Model of Graceful Exit in String Cosmology
• Graceful Exit and Energy Conditions in String Cosmology
• Massive string modes and non-singular pre-big-bang cosmology
• Anisotropic String Cosmology at Large Curvatures

Cited by in corpus (3)

• k-Inflation
• Gravitational Wave Experiments and Early Universe Cosmology
• The Pre-Big Bang Scenario in String Cosmology