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Gravitationally induced adiabatic particle production: From Big Bang to de Sitter (1512.03100v3)
Published 7 Dec 2015 in gr-qc
Abstract: In the background of a flat homogeneous and isotropic space-time, we consider a scenario of the universe driven by the gravitationally induced adiabatic' particle production with constant creation rate. We have shown that this universe attains a big bang singularity in the past and at late-time it asymptotically becomes de Sitter. To clarify this model universe, we perform a dynamical analysis and found that the universe attains a thermodynamic equilibrium in this late de Sitter phase. Finally, for the first time, we have discussed the possible effects ofadiabatic' particle creations in the context of Loop Quantum Cosmology.