Preheating the String Axiverse: non-perturbative production of stringy axions

25 Sept 2024, 17:04
17m
Seminar room 3

Seminar room 3

Strings & Mathematical Physics Parallel Wednesday Strings & Mathematical Physics

Speaker

Margherita Putti (UNI/TH (Uni Hamburg, Institut fuer Theoretische Physik))

Description

The standard reheating process after inflation can be preceded by preheating, a phase where the oscillations of the inflaton field at the bottom of its potential lead to explosive production of particles via parametric resonance, potentially altering the history of the universe.
I will discuss an inflating modulus, coupled to an axion via a typical potential coupling coming from type iib string theory on Calabi-Yau orientifolds and explore the consequences of parametric resonance in the string axiverse.

Author

Margherita Putti (UNI/TH (Uni Hamburg, Institut fuer Theoretische Physik))

Presentation materials