22-28 July 2010
Palais des Congrès de Paris
Europe/Paris timezone

Superstring Cosmology

22 Jul 2010, 11:22
18m
Salle 252A ()

Salle 252A

Parallel Session Talk 12 - Beyond Quantum Field Theory Approaches (including String Theories) 12 - Beyond Quantum Field Theory Approaches (including String Theories)

Speaker

John Estes (ENS)

Description

In a string theory framework, one may unambiguously compute the free-energy density including the vacuum energy, in backgrounds with spontaneously broken supersymmetry. For certain classes of models, the resulting backreaction induces a cosmological evolution which mimics a radiation dominated expansion. The supersymmetry breaking scale is attracted to the temperature scaleand the internal moduli may be stabilized at points of enhanced symmetry. Finally the expansion may go through several higher dimensional phases, before the final attraction to a four dimensional evolution.

Primary author

Co-authors

Costas Kounnas (ENS) Francois Bourliot (Ecole Polytechnique) Hervé Partouche (Ecole Polytechnique)

Presentation Materials