Hybrid Inflation in Intersecting Brane Worlds

Details Hybrid Inflation in Intersecting Brane Worlds Hybrid Inflation in Intersecting Brane Worlds

2002-02-19

arxiv.org/abs/hep-th/0202124v2

Nucl.Phys.B641:235-255,2002

Physics

High Energy Physics

High Energy Physics - Theory

26 pages, 2 figures, harvmac; v2: reference added

Scientific paper

10.1016/S0550-3213(02)00614-4

Non-supersymmetric brane world scenarios in string theory display perturbative instabilities that usually involve run-away potentials for scalar moduli fields. We investigate in the framework of intersecting brane worlds whether the leading order scalar potential for the closed string moduli allows to satisfy the slow-rolling conditions required for applications in inflationary cosmology. Adopting a particular choice of basis in field space and assuming mechanisms to stabilize some of the scalars, we find that slow-rolling conditions can be met very generically. In intersecting brane worlds inflation can end nearly instantaneously like in the hybrid inflation scenario due to the appearance of open string tachyons localized at the intersection of two branes, which signal a corresponding phase transition in the gauge theory via the condensation of a Higgs field.

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