336 citations · 1.6k across the 53 of their papers we have counts for
6 papers · 1 filter
Ideal MHD(-Einstein) Solutions Obeying The Force-Free Condition
Yi-Zen Chu, Vitaly Vanchurin
We find two families of analytic solutions to the ideal magnetohydrodynamics (iMHD) equations, in a class of 4-dimensional (4D) curved spacetimes. The plasma current is null, and a…
Cosmic string loops: large and small, but not tiny
Vitaly Vanchurin
We develop an analytical model to study the production spectrum of loops in the cosmic string network. In the scaling regime, we find two different scales corresponding to large (o…
Attractor scenarios and superluminal signals in k-essence cosmology
Jin U Kang, Vitaly Vanchurin, Sergei Winitzki
Cosmological scenarios with k-essence are invoked in order to explain the observed late-time acceleration of the universe. These scenarios avoid the need for fine-tuned initial con…
Scaling of cosmic string loops
Vitaly Vanchurin, Ken D. Olum, Alexander Vilenkin
We study the spectrum of loops as a part of a complete network of cosmic strings in flat spacetime. After a long transient regime, characterized by production of small loops at the…
Cosmic string scaling in flat space
Vitaly Vanchurin, Ken Olum, Alexander Vilenkin
We investigate the evolution of infinite strings as a part of a complete cosmic string network in flat space. We perform a simulation of the network which uses functional forms for…
Predictability crisis in inflationary cosmology and its resolution
Vitaly Vanchurin, Alexander Vilenkin, Serge Winitzki
Models of inflationary cosmology can lead to variation of observable parameters ("constants of Nature") on extremely large scales. The question of making probabilistic predictions…