17–21 Jul 2023
University of Southampton Highfield Campus
Europe/London timezone

Gravitational Waves and Gravitino Mass in No-Scale SUGRA Wess-Zumino model with Polonyi Term

19 Jul 2023, 18:00
20m
B46/2005

B46/2005

Parallel talks Supergravity and cosmology Supergravity and Cosmology

Speaker

Dr Miguel Crispim Romao (LIP, University of Southampton)

Description

No-Scale SUGRA has attracted considerable interest as a framework for inflation as it provides a natural realisation of Starobinsky-like inflation models. Recently, it was shown that suitable modifications of the Kahler potential produce a kink on the inflaton scalar potential that generates an enhancement in the power spectrum, leading to the production of Gravitational Waves. In this talk, we revisit a No-Scale inflationary model that breaks SUSY at the end of inflation due to the presence of a Polonyi term, and we study how the proposed Kahler potential modifications can lead to the production of Gravitational Waves. To find suitable points in the parameter space, we employ an Artificial Intelligence scan based on an Evolutionary Strategy algorithm, and study the phenomenological implications of the Gravitational Waves spectrum and the gravitino mass.

Author

Dr Miguel Crispim Romao (LIP, University of Southampton)

Co-author

Stephen F King (University of Southampton)

Presentation materials