A Study of Universal Thermodynamics in Massive Gravity: Modified Entropy on the Horizons

Abstract

Universal thermodynamics for FRW model of the Universe bounded by apparent/event horizon has been considered for massive gravity theory. Assuming Hawking temperature and using the unified first law of thermodynamics on the horizon, modified entropy on the horizon has been determined. For simple perfect fluid with constant equation of state, generalized second law of thermodynamics and thermodynamical equilibrium have been examined on both the horizons.

17 pages, 4 figures

References in corpus (20)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Resummation of Massive Gravity
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Dark torsion as the cosmic speed-up
• Modified f(R) gravity consistent with realistic cosmology: from matter dominated epoch to dark energy universe
• Thermodynamic Behavior of Friedmann Equation at Apparent Horizon of FRW Universe
• Unified First Law and Thermodynamics of Apparent Horizon in FRW Universe
• Dark Energy: the equation of state description versus scalar-tensor or modified gravity
• Massive gravity: nonlinear instability of the homogeneous and isotropic universe
• Thermodynamics of Apparent Horizon in Brane World Scenario
• Fourth order gravity: equations, history, and applications to cosmology
• Gravitinos from Heavy Scalar Decay
• Self-accelerating Massive Gravity: Exact solutions for any isotropic matter distribution
• Charged black holes in nonlinear massive gravity
• An $f(R)$ gravitation for galactic environments
• Validity of the Generalized Second Law of Thermodynamics of the Universe Bounded by the Event Horizon in Holographic Dark Energy Model
• The generalized second law of thermodynamics and the nature of the Entropy Function
• Validity of the Generalized Second Law of Thermodynamics of the Universe Bounded by the Event Horizon in Brane Scenario
• Thermodynamics of Lemaitre-Tolman-Bondi Model