Holographic dark energy and validity of the generalized second law of thermodynamics in the dgp brane world

Abstract

In this paper, we investigate the validity of the generalized second law of thermodynamics of the universe in the DGP brane world.The boundary of the universe is assumed to be enclosed by the dynamical apparent horizon or the event horizon. The universe is chosen to be homogeneous and isotropic and the validity of the first law has been assumed here. The matter in the universe is taken in the form of non-interacting two fluid system- one component is the holographic dark energy model and the other component is in the form of dust.

9 pages, 4 figures

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• Finite-time Cosmological Singularities and the Possible Fate of the Universe
• Tsallis holographic dark energy in the brane cosmology
• Interacting New Agegraphic Dark Energy in a Cyclic Universe
• Brane Cosmology with the Chameleon Scalar Field in Bulk
• Late time accelerated scaling attractors in DGP (Dvali-Gabadadze-Porrati) braneworld
• Universe Bounded By Event Horizon: A Non equilibrium Thermodynamic Prescription
• Study of Thermodynamics in Generalized Holographic and Ricci Dark Energy Models
• Thermodynamical aspects of modified holographic dark energy model