Radiation via Tunneling from a de Sitter Cosmological Horizon

By A. Medved. 2002

309 citations recorded by the source corpus.

Hawking radiation can usefully be viewed as a semi-classical tunneling process that originates at the black hole horizon. The same basic premise should apply to de Sitter background radiation, with the cosmological horizon of de Sitter space now playing the featured role. In fact, a recent work [hep-th/0204107] has gone a long way to verifying the validity of this de Sitter-tunneling picture. In the current paper, we extend these prior considerations to arbitrary-dimensional de Sitter space, as well as Schwarzschild-de Sitter spacetimes. It is shown that the tunneling formalism naturally censors against any black hole with a mass in excess of the Nariai value; thus enforcing a ``third law'' of Schwarzschild-de Sitter thermodynamics. We also provide commentary on the dS/CFT correspondence in the context of this tunneling framework.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/b655a728f3d2343b2c1f84e0b8a4a36a6dd2a30f

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Citations in the corpus

Charged fermions tunnelling from Kerr–Newman black holes (2008, methodology): “Tunnelling methods have even been applied to horizons that are not black hole horizons including those with cosmological horizons [5],[6],[25],and Rindler Spacetimes [4],[14],[24] for which it has been shown the Unruh temperature [30] is in fact recovered.”
Gravity and the thermodynamics of horizons (2005, methodology): “he horizon can be mapped because of scale invariance — using the method of complex paths [see, e.g., Eq. (A36) of [41]]. While the literature in this subject often uses the term “tunneling” [see eg., [53,63]] to describe the emergence of an imaginary part to p,Aetc., in the context of horizons it is”
Gravity and the Thermodynamics of Horizons (2003, background): “While the literature in this subject often uses the term " tunneling " [see eg., Medved (2002); Parikh and Wilczek (2000)] to describe the emergence of an imaginary part to p, A etc., in the context of horizons it is more appropriate to think of this process as " over-the-barrier reflection " .”