Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2009-03-23
Class.Quant.Grav.26:225005,2009
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
The article has been revised for publication in Classical and Quantum Gravity. All calculations remain unchanged. A discussion
Scientific paper
10.1088/0264-9381/26/22/225005
This paper presents a calculation of the quasilocal energy of a generic FRW model of the universe. The results have the correct behavior in the small-sphere limit and vanish for the empty Milne universe. Higher order corrections are found when comparing these results to classical calculations of cosmological energy. This case is different from others in the literature chiefly in that it involves a non-stationary spacetime. This fact can be used to differentiate between the various formulations of quasilocal energy. In particular, the formulation due to Brown and York is compared to that of Epp. Only one of these is seen to have the correct classical limit.
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