Výsledky vyhledávání

Report

Quantum oscillations in the black hole horizon

Autor: Corda, C., Feleppa, F., Tamburini, F., Licata, I.

Publikováno v: Theoretical and Mathematical Physics, 213(2): 1632-1664 (2022)

By applying Rosen's quantization approach to the historical Oppenheimer and Snyder gravitational collapse and by setting the constraints for the formation of the Schwarzschild black hole (SBH), in a previous paper [1] two of the Authors (CC and FF) f

Externí odkaz: http://arxiv.org/abs/2104.05451

Zobrazit plný text záznamu

Report

On the quantization of the extremal Reissner-Nordstrom black hole

Autor: Corda, C., Feleppa, F., Tamburini, F.

Publikováno v: EPL 132 (2020) 30001

Following Rosen's quantization rules, two of the Authors (CC and FF) recently described the Schwarzschild black hole (BH) formed after the gravitational collapse of a pressureless "star of dust" in terms of a "gravitational hydrogen atom". Here we ge

Externí odkaz: http://arxiv.org/abs/2003.07173

Zobrazit plný text záznamu

Report

Hartle-Hawking boundary conditions as Nucleation by de Sitter Vacuum

Autor: Feleppa, F., Licata, I., Corda, C.

Publikováno v: Phys. Dark Un. 26, 100381 (2019)

It is shown that, for a de Sitter Universe, the Hartle-Hawking (HH) wave function can be obtained in a simple way starting from the Friedmann-Lemaitre-Robertson-Walker (FLRW) line element of cosmological equations. An oscillator having imaginary time

Externí odkaz: http://arxiv.org/abs/1909.07824

Zobrazit plný text záznamu

Report

The generalized and extended uncertainty principles and their implications on the Jeans mass

Autor: Moradpour, H., Ziaie, A. H., Ghaffari, S., Feleppa, F.

Publikováno v: MNRAS 488 L69 (2019)

The generalized and extended uncertainty principles affect the Newtonian gravity and also the geometry of the thermodynamic phase space. Under the influence of the latter, the energy-temperature relation of ideal gas may change. Moreover, it seems th

Externí odkaz: http://arxiv.org/abs/1907.12940

Zobrazit plný text záznamu

Report

Black hole thermodynamics in the Sharma-Mittal generalized entropy formalism

Autor: Ghaffari, S., Moradpour, H., Ziaie, A. H., Asgharian, F., Feleppa, F., Tavayef, M.

Using the Sharma-Mittal entropy, we study some properties of the Schwarzschild and Schwarzschild-de Sitter black holes. The results are compared with those obtained by attributing the Bekenstein entropy bound to the mentioned black holes. Our main re

Externí odkaz: http://arxiv.org/abs/1901.01506

Zobrazit plný text záznamu