Speaker
Dr
Yann Gouttenoire
(Tel Aviv University)
Description
Cosmological first-order phase transitions (1stOPTs) are said to be strongly supercooled when the universe undergoes a vacuum-domination stage ended by percolation. The statistical variations in bubble nucleation histories imply that distinct causal patches percolate at slightly different times. Patches which percolate the latest undergo the longest vacuum-domination stage and as a consequence develop large over-densities triggering their collapse into primordial black holes (PBHs). Supercooled 1stOPTs which take more than 12% of a Hubble time to percolate produce observable PBHs.
Primary author
Dr
Yann Gouttenoire
(Tel Aviv University)
Co-author
Prof.
Tomer Volansky
(Tel Aviv University)
