Low energy greybody factors for fermions emitted by a Schwarzschild-de Sitter black hole

Sporea, Ciprian A.; Borowiec, A.

doi:10.1142/s0218271816500437

Cited by 11 publications

(7 citation statements)

References 42 publications

(59 reference statements)

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“…The comparison of the analytical result with the numerical result was done in [35]. For more studies, see [36][37][38][39][40][41][42][43][44][45][46][47][48]. Adopting a similar radial coordinate, we are able to derive the analytical results for the greybody factors for arbitrary partial modes of a scalar field in the EGB-dS black hole spacetime as well.…”

Section: Introductionmentioning

confidence: 99%

Greybody factors for a spherically symmetric Einstein-Gauss-Bonnet–de Sitter black hole

Zhang

Chen

2018

Phys. Rev. D

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We study the greybody factors of the scalar fields in spherically symmetric Einstein-Gauss-Bonnet-de Sitter black holes in higher dimensions. We derive the greybody factors analytically for both minimally and non-minimally coupled scalar fields. Moreover, we discuss the dependence of the greybody factor on various parameters including the angular momentum number, the non-minimally coupling constant, the spacetime dimension, the cosmological constant and the Gauss-Bonnet coefficient in detail. We find that the non-minimal coupling may suppress the greybody factor and the Gauss-Bonnet coupling could enhance it, but they both suppress the energy emission rate of Hawking radiation. *

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Section: Introductionmentioning

confidence: 99%

Greybody factors for a spherically symmetric Einstein-Gauss-Bonnet–de Sitter black hole

Zhang

Chen

2018

Phys. Rev. D

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“…Massless scalar field emission in 2+1 dimensional dilaton charged black holes were studied by Fernando [18]. Low energy greybody factors for fermions emitted by the Schwarzschild-de Sitter black hole was studied in [19]. Black hole grey body factors and D-brane spectroscopy were studied by Maldesena and Strominger [20].…”

Section: Introductionmentioning

confidence: 99%

Bardeen–de Sitter black holes

Fernando

2017

Int. J. Mod. Phys. D

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In this paper we present a regular black hole with a positive cosmological constant. The regular black hole considered is the well known Bardeen black hole and it is a solution to the Einstein equations coupled to non-linear electrodynamics with a magnetic monopole. The paper discuss the properties of the Bardeen-de Sitter black hole. We have computed the grey body factors and partial absorption cross sections for massless scalar field impinges on this black hole with the third order WKB approximation. A detailed discussion on how the behavior of the grey body factors depend on the parameters of the theory such as the mass, charge and the cosmological constant is given. Possible extensions of the work is discussed at the end of the paper.

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“…The properties of the greybody factors in terms of the particle and spacetime parameters were studied in detail, however, the validity of the analysis was limited due to the necessary assumption that both the value of the cosmological constant and the non-minimal coupling constant had to be small. Recently, two additional works appeared [40,41] that focused again on the analytic, low-energy derivation of greybody factors for fields propagating in the background of a Schwarzschild-de-Sitter black hole.…”

Section: Introductionmentioning

confidence: 99%

Hawking radiation spectra for scalar fields by a higher-dimensional Schwarzschild–de Sitter black hole

2016

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In this work, we study the propagation of scalar fields in the gravitational background of a higher-dimensional Schwarzschild-de-Sitter black hole as well as on the projected-on-thebrane 4-dimensional background. The scalar fields have also a non-minimal coupling to the corresponding, bulk or brane, scalar curvature. We perform a comprehensive study by deriving exact numerical results for the greybody factors, and study their profile in terms of particle and spacetime properties. We then proceed to derive the Hawking radiation spectra for a higher-dimensional Schwarzschild-de-Sitter black hole, and we study both bulk and brane channels. We demonstrate that the non-minimal field coupling, that creates an effective mass term for the fields, suppresses the energy emission rates while the cosmological constant assumes a dual role. By computing the relative energy rates and the total emissivity ratio for bulk and brane emission, we demonstrate that the combined effect of a large number of extra dimensions and value of the field coupling gives to the bulk channel the clear domination in the bulk-brane energy balance. arXiv:1604.08617v2 [hep-th]

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Low energy greybody factors for fermions emitted by a Schwarzschild-de Sitter black hole

Cited by 11 publications

References 42 publications

Greybody factors for a spherically symmetric Einstein-Gauss-Bonnet–de Sitter black hole

Greybody factors for a spherically symmetric Einstein-Gauss-Bonnet–de Sitter black hole

Bardeen–de Sitter black holes

Hawking radiation spectra for scalar fields by a higher-dimensional Schwarzschild–de Sitter black hole

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