Gravitationally induced adiabatic particle production: from big bang to de Sitter. (27th July 2016)

• Record Type: Journal Article
• Authors: Haro, Jaume de; Pan, Supriya
• Is Part Of: Classical and quantum gravity. Volume 33:Number 16(2016:Aug.)
• Publication Date: 2016-07-27
• Subjects: dark energy -- particle creation -- non-equilibrium thermodynamics; 98.80.-k -- 05.70.Ln -- 04.40.Nr -- 98.80.Cq.; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/0264-9381/33/16/165007
• Languages: English
• ISSNs: 0264-9381

Abstract

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 performed 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 of 'adiabatic' particle creations in the context of loop quantum cosmology.