374 citations · 374 across the 1 of their papers we have counts for
5 papers
Relic gravitational waves produced after preheating
S. Yu. Khlebnikov, I. I. Tkachev
We show that gravitational radiation is produced quite efficiently in interactions of classical waves created by resonant decay of a coherently oscillating field. For simple models…
Resonant decay of Bose condensates
S. Yu. Khlebnikov, I. I. Tkachev
We present results of fully non-linear calculations of decay of the inflaton interacting with another scalar field X. Combining numerical results for cosmologically interesting ran…
The Universe after inflation: the wide resonance case
S. Yu. Khlebnikov, I. I. Tkachev
We study numerically the decay of massive and massless inflatons into massive excitations, via a coupling, in the expanding Universe. We find that a wide enough resonance…
Classical decay of inflaton
S. Yu. Khlebnikov, I. I. Tkachev
We present the first fully non-linear calculation of inflaton decay. We map inflaton decay onto an equivalent classical problem and solve the latter numerically. In the mode…
Phase Transitions at Preheating
I. I. Tkachev
Symmetry restoration processes during the non-equilibrium stage of ``preheating'' after inflation is studied. It is shown that symmetry restoration is very efficient when the major…