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Schwarzschild-de Sitter spacetime: the role of Temperature in the emission of Hawking radiation

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arxiv 1707.04900 v2 pith:SDKKX2QX submitted 2017-07-16 hep-th astro-ph.COgr-qchep-ph

Thomas Pappas , Panagiota Kanti This is my paper · ORCID
classification hep-thastro-ph.COgr-qchep-ph
keywords emissionradiationtemperatureconstantgravityhawkingscalarschwarzschild-de
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We consider a Schwarzschild-de Sitter (SdS) black hole, and focus on the emission of massless scalar fields either minimally or non-minimally coupled to gravity. We use six different temperatures, two black-hole and four effective ones for the SdS spacetime, as the question of the proper temperature for such a background is still debated in the literature. We study their profiles under the variation of the cosmological constant, and derive the corresponding Hawking radiation spectra. We demonstrate that only few of these temperatures may support significant emission of radiation. We finally compute the total emissivities for each temperature, and show that the non-minimal coupling constant of the scalar field to gravity also affects the relative magnitudes of the energy emission rates.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Black Hole and Cosmological Particle Production in Schwarzschild de Sitter

    hep-th 2019-08 conditional novelty 7.0 of 10

    For freely falling observers on the horizons of Schwarzschild de Sitter spacetime, particle production spectra are generally non-thermal and equal the transmission-weighted convolution of the black hole and cosmologic...

  2. Scattering and Hawking Radiation from Einstein--Euler--Heisenberg--de Sitter Black Holes

    gr-qc 2026-06 unverdicted novelty 4.0 of 10

    Numerical scattering calculations for neutral scalar and Dirac fields on Einstein-Euler-Heisenberg-de Sitter black holes show that Euler-Heisenberg coupling raises barriers and shifts transmission frequencies upward w...

  3. Grey-Body Factors and Thermodynamics of Asymptotically de Sitter Black Holes in Generalized Proca Theory

    gr-qc 2026-05 unverdicted novelty 4.0 of 10

    Applies sixth-order WKB to compute grey-body factors for test fields on generalized Proca black holes with effective de Sitter scale, finding that scalar mass and couplings raise barriers, suppress low-frequency trans...

  4. Correspondence between quasinormal modes and grey-body factors for massive fields in Schwarzschild-de Sitter spacetime

    gr-qc 2024-12 conditional novelty 4.0 of 10

    For massive scalar fields around de Sitter black holes, grey-body factors computed from quasinormal modes agree with direct WKB calculations to high precision, even for low multipoles.

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