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The Hubble relation between distance and redshift is a purely cosmographic relation that depends only on the symmetries of a FLRW spacetime, but does not intrinsically make any dynamical assumptions. This suggests that it should be possible…

广义相对论与量子宇宙学 · 物理学 2016-11-15 Matt Visser , Celine Cattoen

In this paper, we extend Joule-Thomson expansion to the low-dimensional regime in rainbow gravity by considering the rainbow rotating BTZ metric in the (2+1)-dimensional spacetime. After the metric of the black hole is obtained, we get the…

广义相对论与量子宇宙学 · 物理学 2022-07-05 Siyuan Hui , Benrong Mu , Jun Tao

Applying the Hamilton--Jacobi method we investigate the tunneling of photon across the event horizon of a static spherically symmetric black hole. The necessity of the gauge condition on the photon field, to derive the semiclassical Hawking…

高能物理 - 理论 · 物理学 2010-09-06 Bibhas Ranjan Majhi , Saurav Samanta

We present a simple gedanken experiment in which a compact object traverses a spacetime with three macroscopic spatial dimensions and $n$ compact dimensions. The compactification radius is allowed to vary, as a function of the object's…

广义相对论与量子宇宙学 · 物理学 2023-05-08 Matthew J. Lake , Shi-Dong Liang , Anucha Watcharapasorn

In the present paper we investigate the effects caused by the modification of the dispersion relation obtained by solving the Klein-Gordon equation in the closed Einstein's universe in the context of rainbow's gravity models. Thus, we…

广义相对论与量子宇宙学 · 物理学 2018-01-17 V. B. Bezerra , H. F. Mota , C. R. Muniz

We re-examine a recently proposed scenario where the deformed dispersion relations associated with a flow of the spectral dimension to a UV value of 2 leads to a scale-invariant spectrum of cosmological fluctuations, without the need for…

广义相对论与量子宇宙学 · 物理学 2015-06-16 Giovanni Amelino-Camelia , Michele Arzano , Giulia Gubitosi , Joao Magueijo

We investigate the derivation of Friedmann equations in Rainbow gravity following Jacobson thermodynamic approach. We do not restrict the rainbow functions to be constant as is customarily used, and show that the first law of thermodynamics…

广义相对论与量子宇宙学 · 物理学 2020-05-28 A. Ashour , M. Alcheikh , N. Chamoun

This paper attempted to apply the RVB method for calculating the Hawking temperatures of black holes under f(R) gravity. In calculating the Hawking temperature, we found a difference in the integration constant between the RVB and general…

广义相对论与量子宇宙学 · 物理学 2023-05-24 Wen-Xiang Chen , Jun-Xian Li , Jing-Yi Zhang

We compute the Zero Point Energy in a spherically symmetric background distorted at high energy as predicted by \textit{Gravity's Rainbow}. In this context we setup a Sturm-Liouville problem with the cosmological constant considered as the…

广义相对论与量子宇宙学 · 物理学 2011-04-22 Remo Garattini , Gianluca Mandanici

The rotating linear dilatonic black hole is an asymptotically non-flat solution to Einstein-Maxwell-Dilaton-Axion gravity theory due to the existence of non-trivial matter fields. We have analytically studied the wave equation of scalar…

高能物理 - 理论 · 物理学 2013-04-29 Ran Li

We prove a few novel state-dependent uncertainty relations for product as well the sum of variances of two incompatible observables. These uncertainty relations are shown to be tighter than the Roberson-Schr\"odinger uncertainty relation…

量子物理 · 物理学 2017-05-24 Debasis Mondal , Shrobona Bagchi , Arun Kumar Pati

We apply the Bogoliubov transformations in order to connect two different vacuums, one~located at past infinity and another located at future infinity around a black hole inside the scenario of the nonlinear theory of massive gravity. The…

广义相对论与量子宇宙学 · 物理学 2018-02-08 Ivan Arraut

In this work, we consider that in energy scales greater than the Planck energy, the geometry, fundamental physical constants, as charge, mass, speed of light and Newtonian constant of gravitation, and matter fields will depend on the scale.…

广义相对论与量子宇宙学 · 物理学 2020-12-16 Ednaldo L. B. Junior , Manuel E. Rodrigues , Marcos V. de S. Silva

We propose intuitive derivations of the Hawking temperature and the Bekenstein-Hawking entropy of a Schwarzschild black hole.

广义相对论与量子宇宙学 · 物理学 2007-05-23 P. R. Silva

The emergence of the quantum gravitational effects in a very high energy regime necessitates some corrections to the thermodynamics of Black holes. In this letter, we investigate a possible modification to the thermodynamics of…

广义相对论与量子宇宙学 · 物理学 2015-09-30 Akram Sadat Sefiedgar

We discuss some thermodynamic properties as well as the stability of a quantum Schwarzschild black hole, comparing the results with those obtained within a bumblebee gravity model. In particular, the Hawking temperature, $T_H$, the entropy,…

广义相对论与量子宇宙学 · 物理学 2024-04-30 Leonardo Balart , Grigoris Panotopoulos , Ángel Rincón

We examine the thermodynamics of a regular charged black hole (RCB) added with corrections due to massive gravity and thermal fluctuations at quantum level. We then derive the expressions for all the relevant thermodynamic quantities such…

广义相对论与量子宇宙学 · 物理学 2022-07-05 Amruta Desai , Shubham Sharma , Prince A. Ganai

In this work, we study the thermodynamic properties on a non--commutative background via gravitational gauge field potentials. This procedure is accomplished after contracting de Sitter (dS) group, $\mathrm{SO}(4,1)$, with the Poincar\`e…

高能物理 - 理论 · 物理学 2023-02-07 A. A. Araújo Filho , S. Zare , P. J. Porfírio , J. Kříž , H. Hassanabadi

We show a new property of sonic black holes. After deriving the metric of a sonic black hole from the Schrodinger equation and quantizing the perturbation fields near the sonic event horizon, we show particles of Hawking radiation can act…

量子物理 · 物理学 2008-11-26 Xian-Hui Ge You-Gen Shen

The Ruppeiner metric as determined by the Hessian of the Gibbs surface provides a geometric description of thermodynamic systems in equilibrium. An interesting example is a black hole in equilibrium with its own Hawking radiation. In this…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Jan E Aman , James Bedford , Daniel Grumiller , Narit Pidokrajt , John Ward