15–17 Jun 2022
Europe/Stockholm timezone

Phase Transition and Gravitational Wave of Strongly Coupled Dark Sectors

15 Jun 2022, 13:00
15m
Parallel session: partikelsektionen Sektionen för elementarpartikel och astropartikelfysik

Speaker

Dr Zhi Wei Wang (Lund University)

Description

We go beyond the state-of-the-art by combining first principal lattice results and effective field theory approaches as Polyakov Loop model to explore the non-perturbative dark deconfinement-confinement phase transition and the generation of gravitational-waves in a dark Yang-Mills theory. We further include fermions with different representations in the dark sector. Employing the Polyakov-Nambu-Jona-Lasinio (PNJL) model, we discover that the relevant gravitational wave signatures are highly dependent on the various representations. We also find a remarkable interplay between the deconfinement-confinement and chiral phase transitions. In both scenarios, the future Big Bang Observer experiment has a higher chance to detect the gravitational wave signals.

Author

Dr Zhi Wei Wang (Lund University)

Presentation materials