Superheavy Dark Matter Production from Symmetry Restoration First-Order Phase Transition During Inflation

Understand

We propose a scenario where superheavy dark matter (DM) can be produced via symmetry restoration first-order phase transition during inflation triggered by the evolution of the inflaton field.

• The phase transition happens in a spectator sector coupled to the inflaton field.
• During the phase transition, the spectator field tunnels from a symmetry-broken vacuum to a symmetry-restored vacuum.
• The massive particles produced after bubble collisions are protected against decaying by the restored symmetry and may serve as a DM candidate in the later evolution of the Universe.