Dynamical Conifold Transitions and Moduli Trapping in M-Theory Cosmology

Details Dynamical Conifold Transitions and Moduli Trapping in M-Theory Cosmology Dynamical Conifold Transitions and Moduli Trapping in M-Theory Cosmology

2004-10-28

arxiv.org/abs/hep-th/0410273v1

JCAP 0501 (2005) 006

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, 3 figures

Scientific paper

10.1088/1475-7516/2005/01/006

We study five-dimensional Kasner cosmologies in the vicinity of a conifold locus occurring in a time-dependent Calabi-Yau compactification of M-theory. The dynamics of M2-brane winding modes, which become light in this region, is taken into account using a suitable gauged supergravity action. We find cosmological solutions which interpolate between the two branches of the transition, establishing that conifold transitions can be realized dynamically. However, generic solutions do not correspond to transitions, but to the moduli getting trapped close to the conifold locus. This effect results from an interplay between the scalar potential and Hubble friction. We show that the dynamics does not depend on the details of the potential, but only on its overall shape.

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