Thermodynamics of Evolving Lorentzian Wormhole at Apparent and Event Horizons

Details Thermodynamics of Evolving Lorentzian Wormhole at Apparent and Event Horizons Thermodynamics of Evolving Lorentzian Wormhole at Apparent and Event Horizons

2012-02-06

arxiv.org/abs/1202.1706v2

Physics

General Physics

15 pages, no figures. arXiv admin note: significant text overlap with arXiv:0911.2556, and text overlap with 0907.4055 by othe

Scientific paper

We have investigated the non-static Lorentzian Wormhole model in presence of anisotropic pressure. We have presented some exact solutions of Einstein equations for anisotropic pressure case. Introducing two EoS parameters we have shown that these solutions give very rich dynamics of the universe yielding to the different expansion history of it in the $r$ - direction and in the $T$ - direction. The corresponding explicit forms of the shape function $b(r)$ is presented.We have shown that the Einstein's field equations and unified first law are equivalent for the dynamical wormhole model. The first law of thermodynamics has been derived by using the Unified first law. The physical quantities including surface gravity and the temperature are derived for the wormhole. Here we have obtained all the results without any choice of the shape function. The validity of generalized second law (GSL) of thermodynamics has been examined at apparent and event horizons for the evolving Lorentzian wormhole.

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