Dissipative generalized Chaplygin gas as phantom dark energy

Abstract

The generalized Chaplygin gas, characterized by the equation of state $p=-\mathcal{A}/{\rho }^{\alpha }$, has been considered as a model for dark energy due its dark-energy-like evolution at late times. When dissipative processes are taken account, within the framework of the standard Eckart theory of relativistic irreversible thermodynamics, cosmological analytical solutions are found. Using the truncated causal version of the Israel-Stewart formalism, a suitable model was constructed which cross the $w=-1$ barrier. The future-singularities encounter in both approaches are of a new type, not included in the classification presented by S. Nojiri, S. D. Odintsov and S. Tsujikawa, Phys. Rev. D71, 063004 (2005).

8 pages

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• Generalized Holographic Dark Energy Model
• Crossing the phantom divide with dissipative normal matter in the Israel-Stewart-Hiscock formalism
• Phantom solution in a non-linear Israel-Stewart theory
• Cardassian Universe Constrained by Latest Observations
• Emerging the dark sector from thermodynamics of cosmological systems with constant pressure
• Canonical and phantom scalar fields as an interaction of two perfect fluids
• Multi-fluid cosmology in Einstein gravity: analytical solutions
• Dissipative Future Universe without Big Rip
• No stable dissipative phantom scenario in the framework of a complete cosmological dynamics
• The nature of cosmological singularities in isotropic universes and braneworlds
• Evolution and thermodynamics of new holographic dark energy with bulk viscosity in modified $f(R,T)$ gravity