Wave asymptotics at a cosmological time-singularity: classical and quantum scalar fields
Language
en
Article de revue
This item was published in
Commun.Math.Phys. 2019, vol. 369, n° 3, p. 973-1020
English Abstract
We investigate the propagation of the scalar waves in the FLRW universes beginning with a Big Bang and ending with a Big Crunch, a Big Rip, a Big Brake, or a Sudden Singularity. We obtain the sharp description of the ...Read more >
We investigate the propagation of the scalar waves in the FLRW universes beginning with a Big Bang and ending with a Big Crunch, a Big Rip, a Big Brake, or a Sudden Singularity. We obtain the sharp description of the asymptotics for the solutions of the linear Klein–Gordon equation, and similar results for the semilinear equation with a subcritical exponent. We prove that the number of cosmological particle creation is finite under general assumptions on the initial Big Bang and the final Big Crunch or Big Brake.Read less <
English Keywords
big crunch
big bang
Klein-Gordon equation: solution
Robertson-Walker
propagation
singularity
big rip
asymptotic behavior
Origin
Hal imported