Reheating Closed String Inflation

Understand

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.