Seminars IFIC

IFIC Seminar: Quantum gravity effects on dark matter and gravitational waves

by Dr. Rishav Roshan (School of Physics and Astronomy, University of Southampton, Southampton, UK)

Europe/Madrid
1001-Primera-1-1-1 - Paterna. Seminario (Universe)

1001-Primera-1-1-1 - Paterna. Seminario

Universe

60
Description

We explore how quantum gravity effects, manifested through the breaking of discrete symmetry responsible for both dark matter and domain walls, can have observational effects through cosmic microwave background observations and gravitational waves. To illustrate the idea, we consider a simple model with two scalar fields and two Z_2 symmetries, one being responsible for dark matter stability and the other spontaneously broken and responsible for domain walls, where both symmetries are assumed to be explicitly broken by quantum gravity effects. We show the recent gravitational wave spectrum observed by several pulsar timing array projects can help constrain such effects.

This Seminar has received funding/support from the Conselleria de Educación, Cultura, Universidades Research Project "Sabor y Origen de la Materia" CIPROM/2022/69

IFIC seminar organizers
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