Reheating Closed String Inflation

Details Reheating Closed String Inflation Reheating Closed String Inflation

2007-07-26

arxiv.org/abs/0707.3832v3

Phys.Rev.D76:103504,2007

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, v2: fixed typos and added refs, v3: fixed typos, added refs and title change

Scientific paper

10.1103/PhysRevD.76.103504

Protecting the inflationary potential from quantum corrections typically requires symmetries that constrain the form of couplings of the inflaton to other sectors. We will explore how these restrictions affect reheating in models with UV completions. In particular, we look at how reheating occurs when inflation is governed by closed strings, using N-flation as an example. We find that coupling the inflaton preferentially to the Standard Model is difficult, and hidden sectors are typically reheated. Observational constraints are only met by a fraction of the models. In some working models, relativistic relics in the hidden sector provide dark matter candidates with masses that range from keV to PeV, with lighter masses being preferred.

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