45 citations · 122 across the 3 of their papers we have counts for
8 papers
Detonations and deflagrations in cosmological phase transitions
Ariel Megevand, Alejandro D. Sanchez
We study the steady state motion of bubble walls in cosmological phase transitions. Taking into account the boundary and continuity conditions for the fluid variables, we calculate…
Gravitational waves from deflagration bubbles in first-order phase transitions
Ariel Megevand
The walls of bubbles in a first-order phase transition can propagate either as detonations, with a velocity larger than the speed of sound, or deflagrations, which are subsonic. We…
Supercooling and phase coexistence in cosmological phase transitions
Ariel Megevand, Alejandro D. Sanchez
Cosmological phase transitions are predicted by Particle Physics models, and have a variety of important cosmological consequences, which depend strongly on the dynamics of the tra…
Dark energy from coexistence of phases
Ariel Megevand
We suggest that the current acceleration of the universe may be explained by the vacuum energy of a hidden sector which is stuck in a state of equilibrium between phases. The phase…
Electroweak Baryogenesis and New TeV Fermions
Marcela Carena, Ariel Megevand, Mariano Quiros +1
New fermions, strongly coupled to the Standard Model Higgs boson provide a well motivated extension of the Standard Model (SM). In this work we show that, once new physics at heavi…
Generation of baryon inhomogeneities in the electroweak phase transition
Ariel Megevand, Francisco Astorga
It is known that baryon number inhomogeneities may arise as a consequence of electroweak baryogenesis. Their geometry, size, and amplitude depend on the parameters that characteriz…