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Physical constraints on interacting dark energy models

Gonzalez, J. E. ; Silva, H. H. B. ; Silva, R. ; Alcaniz, J. S.

The European physical journal. C, Particles and fields, 2018-09, Vol.78 (9), p.1-8, Article 730 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
Physical constraints on interacting dark energy models
Autor: Gonzalez, J. E. ; Silva, H. H. B. ; Silva, R. ; Alcaniz, J. S.
Assuntos: Astronomy ; Astrophysics and Cosmology ; Big Bang theory ; Constraint modelling ; Cosmic microwave background ; Dark energy ; Dark matter ; Elementary Particles ; Flux density ; Hadrons ; Heavy Ions ; Measurement Science and Instrumentation ; Nuclear Energy ; Nuclear Physics ; Parameters ; Physics ; Physics and Astronomy ; Quantum Field Theories ; Quantum Field Theory ; Regular Article - Theoretical Physics ; String Theory ; Supernovae ; Thermodynamics
É parte de: The European physical journal. C, Particles and fields, 2018-09, Vol.78 (9), p.1-8, Article 730
Descrição: Physical limits on the equation-of-state (EoS) parameter of a dark energy component non-minimally coupled with the dark matter field are examined in light of the second law of thermodynamics and the positiveness of entropy. Such constraints are combined with observational data sets of type Ia supernovae, baryon acoustic oscillations and the angular acoustic scale of the cosmic microwave background to impose restrictions on the behaviour of the dark matter/dark energy interaction. Considering two EoS parameterisations of the type w = w 0 + w a ζ ( z ) , we derive a general expression for the evolution of the dark energy density and show that the combination of thermodynamic limits and observational data provide tight bounds on the w 0 - w a parameter space.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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Physical constraints on interacting dark energy models

Gonzalez, J. E. ; Silva, H. H. B. ; Silva, R. ; Alcaniz, J. S.

Berlin/Heidelberg: Springer Berlin Heidelberg

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