146 citations · 483 across the 11 of their papers we have counts for
11 papers
Lower bound on the electroweak wall velocity from hydrodynamic instability
Ariel Megevand, Federico Agustin Membiela, Alejandro D. Sanchez
The subsonic expansion of bubbles in a strongly first-order electroweak phase transition is a convenient scenario for electroweak baryogenesis. For most extensions of the Standard…
Analytic approach to the motion of cosmological phase transition fronts
Ariel Megevand, Alejandro D. Sanchez
We consider the motion of planar phase-transition fronts in first-order phase transitions of the Universe. We find the steady state wall velocity as a function of a friction coeffi…
Gravitational waves from the electroweak phase transition
Leonardo Leitao, Ariel Megevand, Alejandro D. Sanchez
We study the generation of gravitational waves in the electroweak phase transition. We consider a few extensions of the Standard Model, namely, the addition of scalar singlets, the…
Velocity of electroweak bubble walls
Ariel Megevand, Alejandro D. Sanchez
We study the velocity of bubble walls in the electroweak phase transition. For several extensions of the Standard Model, we estimate the friction and calculate the wall velocity, t…
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…
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…
Rare Events and Scale--Invariant Dynamics of Perturbations in Delayed Dynamical Systems
Alejandro D. Sanchez, Juan M. Lopez, Miguel A. Rodriguez +1
We study the dynamics of perturbations in time delayed dynamical systems. Using a suitable space-time coordinate transformation, we find that the time evolution of the linearized p…
Nonequilibrium Phase Transitions in Directed Small-World Networks
Alejandro D. Sanchez, Juan M. Lopez, Miguel A. Rodriguez
Many social, biological, and economic systems can be approached by complex networks of interacting units. The behaviour of several models on small-world networks has recently been…
Effect of Non Gaussian Noises on the Stochastic Resonance-Like Phenomenon in Gated Traps
J. A. Revelli, A. D. Sanchez, H. S. Wio
We exploit a simple one-dimensional trapping model introduced before, prompted by the problem of ion current across a biological membrane. The voltage-sensitive channels are open o…
Trapping Dynamics with Gated Traps: Stochastic Resonance-Like Phenomenon
Alejandro D. Sanchez, Jorge A. Revelli, Horacio S. Wio
We present a simple one-dimensional trapping model prompted by the problem of ion current across biological membranes. The trap is modeled mimicking the ionic channel membrane beha…
Trapping with biased diffusion species
Alejandro D. Sanchez
We analyze a trapping reaction with a single penetrable trap, in a one dimensional lattice, where both species (particles and trap) are mobile and have a drift velocity. We obtain…