Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2000-08-08
Int.J.Mod.Phys. D10 (2001) 33-40
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Essay awarded an honorable mention in the year 2000 Gravity Research Foundation essay competition
Scientific paper
10.1142/S0218271801000937
Recent results of quantum field theory on a curved spacetime suggest that extremal black holes are not thermal objects and that the notion of zero temperature is ill-defined for them. If this is correct, one may have to go to a full semiclassical theory of gravity, including backreaction, in order to make sense of the third law of black hole thermodynamics. Alternatively, it is possible that we shall have to drastically revise the status of extremality in black hole thermodynamics.
Liberati Stefano
Rothman Tony
Sonego Sebastiano
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