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12 papers · 1 filter
Greybody Factors for Rotating Black Holes on Codimension-2 Branes
Songbai Chen, Bin Wang, Ru-Keng Su +1
We study the absorption probability and Hawking radiation of the scalar field in the rotating black holes on codimension-2 branes. We find that finite brane tension modifies the st…
Reconstructing the properties of dark energy from recent observations
Puxun Wu, Hongwei Yu
We explore the properties of dark energy from recent observational data, including the Gold Sne Ia, the baryonic acoustic oscillation peak from SDSS, the CMB shift parameter from W…
Hawking radiation in a Rotating Kaluza-Klein Black Hole with Squashed Horizons
Songbai Chen, Bin Wang, Ru-Keng Su
We explore the signature of the extra dimension in the Hawking radiation in a rotating Kaluza-Klein black hole with squashed horizons. Comparing with the spherical case, we find th…
Entropy of the Schwarzschild-de Sitter Black Hole due to arbitrary spin fields in different Coordinates
Chikun Ding, Jiliang Jing
By using the Newman-Penrose formalism and the improved thin-layer ``brick wall'' approach, the statistical-mechanical entropies of the Schwarzschild-de Sitter black hole arising fr…
Do static atoms outside a Schwarzschild black hole spontaneously excite?
Hongwei Yu, Wenting Zhou
The spontaneous excitation of a two-level atom held static outside a four dimensional Schwarzschild black hole and in interaction with a massless scalar field in the Boulware, Unru…
Relationship between Hawking radiation from black holes and spontaneous excitation of atoms
Hongwei Yu, Wenting Zhou
Using the formalism that separates the contributions of vacuum fluctuations and radiation reaction to the rate of change of the mean atomic energy, we show that a two-level atom in…