The 2025 Beijing Particle Physics and Cosmology Symposium (BPCS): early Universe, gravitational-wave templates, collider phenomenology

First-order phase transitions in the early Universe: gravitational waves, black holes, and feebly-interacting particles

27 Sep 2025, 08:30

30m

北京春晖园温泉度假酒店（Chun Hui Yuan Hot Spring Resort Hotel）

Plenary

Speaker

Ryusuke Jinno (Kobe University)

Description

The possibility of first-order phase transition in the early Universe is drawing attention in view of gravitational wave observations planned for the 2030's. In this talk I will first report updates on Higgsless simulations for gravitational wave production, and then report (negative) results regarding primordial black hole formation from strong phase transitions. Then I will discuss possible characteristic imprints on the gravitational waves when feebly interacting particles are produced during first-order phase transitions.