3 papers
hep-ph2026
Can the universe be matter-dominated after a supercooled first-order phase transition?
Henda Mansour, Yann Gouttenoire, Felix Kahlhoefer
We show that the answer is generally no, at least not immediately. Bubble collisions leave behind a highly inhomogeneous scalar field with persistent relativistic gradients, produc…
hep-ph2025
Dark matter phase-in: producing feebly-interacting particles after a first-order phase transition
Cristina Benso, Felix Kahlhoefer, Henda Mansour
The freeze-in mechanism describes the out-of-equilibrium production of dark matter (DM) particles via feeble couplings or non-renormalisable interactions with large suppression sca…
hep-ph2025
On Particle Production from Phase Transition Bubbles
Henda Mansour, Bibhushan Shakya
While first order phase transitions (FOPTs) have been extensively studied as promising cosmological sources of gravitational waves, the phenomenon of particle production from the d…