2k citations · 13.2k across the 79 of their papers we have counts for
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Inflation and de Sitter Thermodynamics
Andrei Frolov, Lev Kofman
We consider the quasi-de Sitter geometry of the inflationary universe. We calculate the energy flux of the slowly rolling background scalar field through the quasi-de Sitter appare…
Gravitational Waves from Braneworld Inflation
Andrei Frolov, Lev Kofman
We investigate the generation of primordial gravitational waves from inflation in braneworld cosmologies with extra dimensions. Advantage of using primordial gravitational waves to…
Caustics in Tachyon Matter and Other Born-Infeld Scalars
Gary Felder, Lev Kofman, Alexei Starobinsky
We consider scalar Born-Infeld type theories with arbitrary potentials V(T) of a scalar field T. We find that for models with runaway potentials V(T) the generic inhomogeneous solu…
Inflationary Theory and Alternative Cosmology
Lev Kofman, Andrei Linde, V. Mukhanov
Recently Hollands and Wald argued that inflation does not solve any of the major cosmological problems. We explain why we disagree with their arguments. They also proposed a new sp…
Problems with Tachyon Inflation
Lev Kofman, Andrei Linde
We consider cosmological consequences of string theory tachyon condensation. We show that it is very difficult to obtain inflation in the simplest versions of this theory. Typicall…
Prospects and Problems of Tachyon Matter Cosmology
Andrei Frolov, Lev Kofman, Alexei Starobinsky
We consider the evolution of FRW cosmological models and linear perturbations of tachyon matter rolling towards a minimum of its potential. The tachyon coupled to gravity is descri…