Speaker
Description
Zoom meeting: https://cern.zoom.us/j/7930190483 (password: see email)
Format: 40 minutes talk + 20 min discussion
Virtual Axion Institute: The discussion on this talk can be continued in Mauro's virtual guest office.
https://mattermost.web.cern.ch/axions/channels/mauro-pieroni
Abstract: The talk is divided in two independent parts. I will first discuss models in which a pseudoscalar (axion) inflaton is non-minimally coupled with some (Abelian) gauge fields. In particular, I will show that the efficiency of gravitational wave production during preheating can be used to set stringent constraints on the axion/gauge field coupling. In the second part of the talk I will discuss model independent reconstruction of stochastic gravitational wave backgrounds (SGWB) at LISA. After a brief introduction of the topic, I will discuss a recently proposed approach based on principal components analysis.
