On Inflation in the Presence of a Gaugino Condensate

Details On Inflation in the Presence of a Gaugino Condensate On Inflation in the Presence of a Gaugino Condensate

2009-07-27

arxiv.org/abs/0907.4630v2

Phys.Lett.B684:154-157,2010

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 1 figure ; v2 matches published version in PLB

Scientific paper

10.1016/j.physletb.2010.01.002

We study the effect of inflation on gaugino condensation in supergravity. Unless the Hubble scale H is significantly below the gaugino condensation scale, the gaugino condensate is a dynamical variable which cannot be integrated out. For a sufficiently high H, the gaugino condensate evolves to zero which in turn leads to dilaton/moduli destabilization. In practice, this often occurs at the Hubble rate about an order of magnitude below the gaugino condensation scale. This effect is independent of the specifics of moduli stabilization and thus places model independent constraints on inflationary scenarios. It also applies more generally to any periods of fast expansion in the early Universe.

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