Focus Workshop on Cosmological Phase Transitions: Theory, Dark Matter Genesis, and Gravitational Wave Signatures

Session

Session 10

22 Nov 2025, 16:30

IBS, Daejeon

17. Nonthermal heavy dark matter from a first-order phase transition

Hyun Min Lee (Chung-Ang University)

22/11/2025, 16:30

We study nonthermal production of heavy dark matter from the dynamics of the background scalar field during a first-order phase transition, predominantly from bubble collisions. In scenarios where bubble walls achieve runaway behavior and get boosted to very high energies, we find that it is possible to produce dark matter with mass several orders of magnitude above the symmetry breaking scale...

18. Discussion

22/11/2025, 17:30