Speaker
Roman Pasechnik
(University of Lund)
Description
Evidence for a stochastic gravitational wave background from pulsar timing arrays shows a strong potential for exploring new physics phenomena beyond the Standard Model, which has so far escaped detection at particle colliders. This presentation elucidates how gravitational waves measurements can deepen our understanding of particle interactions and violent processes in the very early Universe. The focus is on the NANOGrav, SKA and LIGO-Virgo-Kagra facilities, targeting conformal U(1) gauge extensions of the SM featuring very strong first-order phase transitions as an important and theoretically motivated case study. We examine how the existing and future data may constrain these models.
