532 citations · 1.2k across the 24 of their papers we have counts for
11 papers · 1 filter
Axion Misalignment Across First-Order Phase Transitions
Galymzhan Baltabay, Francesco D'Eramo, Ville Vaskonen
When the axion mass is generated during a first-order phase transition and becomes non-vanishing only inside expanding true-vacuum bubbles, the standard picture of misalignment pro…
Ultralight Dark Matter from the Edge of Field Space
Mathias Becker, Francesco D'Eramo, Ville Vaskonen
We introduce a novel class of bosonic dark matter candidates that we dub wallions, featuring boundaries in field space. The wallion mass is exponentially suppressed when the separa…
Thermalization effects on the dynamics of growing vacuum bubbles
Tomasz Krajewski, Marek Lewicki, Martin Vasar +3
We study the evolution of growing vacuum bubbles. The bubble walls interact with the surrounding fluid and may, consequently, reach a terminal velocity. If the mean free path of th…
Irreducible cosmological backgrounds of a real scalar with a broken symmetry
Francesco D'Eramo, Andrea Tesi, Ville Vaskonen
We explore the irreducible cosmological implications of a singlet real scalar field. Our focus is on theories with an approximate and spontaneously broken symmetry w…
On the validity of perturbative studies of the electroweak phase transition in the Two Higgs Doublet model
Kimmo Kainulainen, Venus Keus, Lauri Niemi +3
Making use of a dimensionally-reduced effective theory at high temperature, we perform a nonperturbative study of the electroweak phase transition in the Two Higgs Doublet model. W…
Gravitational wave energy budget in strongly supercooled phase transitions
John Ellis, Marek Lewicki, José Miguel No +1
We derive efficiency factors for the production of gravitational waves through bubble collisions and plasma-related sources in strong phase transitions, and find the conditions und…