Hawking-like radiation from the apparent horizon in an FRW Universe : Quantum Corrections
General Relativity and Quantum Cosmology
2012-10-01 v2
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.
Keywords
Cite
@article{arxiv.1106.4370,
title = {Hawking-like radiation from the apparent horizon in an FRW Universe : Quantum Corrections},
author = {Ritabrata Biswas and Nairwita Mazumder and Subenoy Chakraborty},
journal= {arXiv preprint arXiv:1106.4370},
year = {2012}
}
Comments
an error has been found