55 citations · 174 across the 9 of their papers we have counts for
9 papers
Domain walls through different cosmologies
I. Dankovsky, D. Gorbunov, S. Ramazanov +1
We study properties of domain walls (DWs) arising in the model with a double well potential assuming different early universe cosmologies: from dust through stiff matter domination…
Caustic formation in DBI models: Wave propagation on planar domain walls
E. Babichev, B. Gafarov, S. Ramazanov +1
We investigate propagation of generic waves on thin planar domain walls effectively described by the scalar Dirac-Born-Infeld model (DBI). We pay a particular attention to the poss…
Cosmic domain walls on a lattice: illusive effects of initial conditions
I. Dankovsky, S. Ramazanov, E. Babichev +2
Evolution of cosmic domain walls (DWs) settles to the scaling solution, which is often assumed to be independent of initial conditions. However, lattice simulations performed in th…
Biased domain walls: faster annihilation, weaker gravitational waves
E. Babichev, I. Dankovsky, D. Gorbunov +2
We study the evolution of domain wall networks and their phenomenological implications in a model of a real scalar , where a -symmetry is slightly broken by a potential bia…
Numerical analysis of melting domain walls and their gravitational waves
I. Dankovsky, S. Ramazanov, E. Babichev +2
We study domain walls (DWs) arising in field theories where -symmetry is spontaneously broken by a scalar expectation value decreasing proportionally to the Universe temperatu…
Revisiting evolution of domain walls and their gravitational radiation with CosmoLattice
I. Dankovsky, E. Babichev, D. Gorbunov +2
Employing the publicly available CosmoLattice code, we conduct numerical simulations of a domain wall network and the resulting gravitational waves (GWs) in a radiation-dominated U…
NANOGrav spectral index from melting domain walls
E. Babichev, D. Gorbunov, S. Ramazanov +2
We discuss cosmic domain walls described by a tension red-shifting with the expansion of the Universe. These melting domain walls emit gravitational waves with the low-frequency sp…
Gravitational shine of dark domain walls
E. Babichev, D. Gorbunov, S. Ramazanov +1
Cosmic domain walls are harmless, provided that their tension decreases with expansion of the Universe. This setup can be realized, if the scale of spontaneous symmetry breaking is…
Beyond freeze-in: Dark Matter via inverse phase transition and gravitational wave signal
S. Ramazanov, E. Babichev, D. Gorbunov +1
We propose a novel scenario of Dark Matter production naturally connected with generation of gravitational waves. Dark Matter is modelled as a real scalar, which interacts with the…