The 4th Topics of Particle, Astro and Cosmo Frontiers (TOPAC 2026) 第4届粒子物理、天体物理和宇宙学前沿国际学术研讨会

Session

Special Evening Plenary Session 3 (Room 567, Chair Ke-Pan Xie)

19 Apr 2026, 20:35

149. Supercooled Phase Transitions with Radiative Symmetry Breaking (online)

Prof. Alberto Salvio (University of Rome and INFN Tor Vergata)

19/04/2026, 20:35

First-order phase transitions produce gravitational waves and primordial black holes. They always occur in field theories where symmetries are radiatively broken and masses are correspondingly generated. These theories predict a period of supercooling: phase transitions become effective at temperatures much smaller than the symmetry-breaking scale. I will discuss a model-independent approach...

23. Cosmic birefringence and p-form fields

Tucker Manton (HIAS UCAS)

19/04/2026, 21:05

A tantalizing hint of beyond Standard Model (SM) physics lies in the polarization structure of the CMB. Joint analysis of WMAP, Planck, and ACT data suggests that the linear polarization plane of CMB photons has, since the surface of last scattering, rotated by an angle β ~ 0.3 degrees at over 4.5 σ significance. This is a parity violating phenomenon that can't be described using SM degrees of...