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Abstract: Here we consider our universe as inhomogeneous spherically symmetricLemaitre-Tolman-Bondi Model and analyze the thermodynamics of this model of theuniverse. The trapping horizon is calculated and is found to coincide with theapparent horizon. The Einstein field equations are shown to be equivalent withthe unified first law of thermodynamics. Finally assuming the first law ofthermodynamics validity of the generalized second law of thermodynamics isexamined at the apparent horizon for the perfect fluid and at the event horizonfor holographic dark energy.



Autor: Subenoy Chakraborty, Nairwita Mazumder, Ritabrata Biswas

Fuente: https://arxiv.org/







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