M-theory cosmologies from singular Calabi-Yau compactifications

Details M-theory cosmologies from singular Calabi-Yau compactifications M-theory cosmologies from singular Calabi-Yau compactifications

2003-10-20

arxiv.org/abs/hep-th/0310174v2

JCAP 0402:012,2004

Physics

High Energy Physics

High Energy Physics - Theory

66 pages, many figures; v2: minor changes, two references added

Scientific paper

10.1088/1475-7516/2004/02/012

We study five-dimensional Kasner cosmologies in a time-dependent Calabi-Yau compactification of M-theory undergoing a flop transition. The dynamics of the additional states, which become massless at the transition point and give rise to a scalar potential, are taken into account using a recently constructed gauged supergravity action. Due to the dynamics of these states the moduli do not show the usual run-away behavior but oscillate around the transition region. Moreover, the solutions typically exhibit short periods of accelerated expansion. We also analyze the interplay between the geometries of moduli space and space-time.

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