Moduli and multi-field inflation

Details Moduli and multi-field inflation Moduli and multi-field inflation

2007-09-10

arxiv.org/abs/0709.1491v1

Int.J.Mod.Phys.A22:5760-5770,2007

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, 5 figures, based on talks given at CTP Symposium on Supersymmetry at LHC (Cairo, March 11-14 2007) and String Phenome

Scientific paper

10.1142/S0217751X07038992

Moduli with flat or run-away classical potentials are generic in theories based on supersymmetry and extra dimensions. They mix between themselves and with matter fields in kinetic terms and in the nonperturbative superpotentials. As the result, interesting structure appears in the scalar potential which helps to stabilise and trap moduli and leads to multi-field inflation. The new and attractive feature of multi-inflationary setup are isocurvature perturbations which can modify in an interesting way the final spectrum of primordial fluctuations resulting from inflation.

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