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arXiv · 1106.4370

Hawking-like radiation from the apparent horizon in an FRW Universe : Quantum Corrections

Ritabrata Biswas·Nairwita Mazumder·Subenoy Chakraborty
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Abstract

In this paper we study Hawking-like radiation in a FRW-Universe using semi-classical tunnelling approach and the Hamilton-Jacobi method. Radial null geodesics are used to picture the process as a "tunnelling" of particles from behind the apparent horizon and Hawking -like temperature has been calculated. Quantum corrections have been evaluated in the Hamilton-Jacobi Method by solving Klein-Gordan wave equation and the temperature agrees at the semiclassical level. Also it is found that Hamilton-Jacobi formalism does not depend on the choice of the coordinate system. Finally, leading order corrections to entropy has been calculated.

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Ritabrata Biswas, Nairwita Mazumder, Subenoy Chakraborty. 2012-09-28. Hawking-like radiation from the apparent horizon in an FRW Universe : Quantum Corrections. https://arxiv.org/abs/1106.4370

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