Hawking radiation and thermodynamics of dynamical black holes in phantom dominated universe

Abstract

The thermodynamic properties of dark energy-dominated universe in the presence of a black hole are investigated in the general case of a varying equation-of-state-parameter $w(a)$. We show that all the thermodynamics quantities are regular at the phantom divide crossing, and particularly the temperature and the entropy of the dark fluid are always positive definite. We also study the accretion process of a phantom fluid by black holes and the conditions required for the validity of the generalized second law of thermodynamics. As a results we obtain a strictly negative chemical potential and an equation-of-state parameter $w<-5/3.$

22 pages,3 figures

References in corpus (8)

• Cosmological expansion and local physics
• Does the mass of a black hole decrease due to the accretion of phantom energy
• Unified dark energy thermodynamics: varying w and the -1-crossing
• The generalized second law in phantom dominated universes in the presence of black holes
• Thermodynamics second law and $\omega =-1$ crossing(s) in interacting holographic dark energy model
• Chemical Potential and the Nature of the Dark Energy: The case of phantom
• Generalized Second Law and phantom Cosmology: accreting black holes
• An analysis of the Sultana-Dyer cosmological black hole solution of the Einstein equations

Cited by in corpus (1)

• Constraining H0 in General Dark Energy Models from Sunyaev-Zeldovich/X-ray Technique and Complementary Probes