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Primordial black holes formed in the early universe are compelling candidates for dark matter. We investigate their production in Rastall gravity, a modification of general relativity that introduces a non-minimal coupling between matter…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-20 Mayukh R. Gangopadhyay

We revisit the non-commutative geometry inspired Reissner-Nordstr\"{o}m black hole solution obtained by smearing the point sources with a Gaussian distribution. We show that while the form of the metric function and the physical properties…

General Relativity and Quantum Cosmology · Physics 2025-07-29 Gokhan Alkac , Murat Mesta , Gonul Unal

In this letter, we present the first study of Hawking radiation as a tunneling process within the framework of non-commutative (NC) gauge theory of gravity. First, we reconstruct the non-commutative Schwarzschild black hole (NC SBH) within…

General Relativity and Quantum Cosmology · Physics 2023-11-28 Abdellah Touati , Slimane Zaim

We present a self-contained and consistent formulation of noncommutative (NC) gauge theory of gravity, focusing on spherically symmetric black hole geometries. Our construction starts from the gauge-theoretic viewpoint of Poincar\'{e} (or…

High Energy Physics - Theory · Physics 2025-05-20 Tajron Jurić , A. Naveena Kumara , Filip Požar

We investigated regular black holes with fuzzy sources in three and four dimensions. The density distributions of such fuzzy sources are inspired by noncommutative geometry and given by Gaussian or generalized Gaussian functions. We…

High Energy Physics - Theory · Physics 2016-05-17 Shinpei Kobayashi

We examine the behavior of non-commutative Schwarzschild black holes in the context of massive gravity. According to the investigation, corresponding to a minimal mass, the black hole can have two horizons, one horizon, or no horizon at…

General Relativity and Quantum Cosmology · Physics 2024-04-17 Piyali Bhar , Dhruba Jyoti Gogoi , Supakchai Ponglertsakul

Motivated by the energy dependent metric in gravity's rainbow, we will propose a new kind of energy dependent noncommutative geometry. It will be demonstrated that like gravity's rainbow, this new noncommutative geometry is described by an…

General Relativity and Quantum Cosmology · Physics 2018-01-09 Mir Faizal , R. G. G. Amorim , S. C. Ulhoa

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".…

General Relativity and Quantum Cosmology · Physics 2021-01-01 C. Corda , F. Feleppa , F. Tamburini

In a recent string theory motivated paper, Nicolini, Smailagic and Spallucci (NSS) presented an interesting model for a noncommutative inspired, Schwarzschild-like black hole solution in 4-dimensions. The essential effect of having…

High Energy Physics - Phenomenology · Physics 2009-11-11 Thomas G. Rizzo

When embedding models of noncommutative geometry inspired black holes into the peridium of large extra dimensions, it is natural to relate the noncommutativity scale to the higher-dimensional Planck scale. If the Planck scale is of the…

High Energy Physics - Phenomenology · Physics 2014-11-20 Douglas M. Gingrich

We obtain a new, exact, solution of the Einstein's equation in higher dimensions. The source is given by a static spherically symmetric, Gaussian distribution of mass and charge. De-localization of mass and charge is due to the presence of…

High Energy Physics - Theory · Physics 2009-02-19 Euro Spallucci , Anais Smailagic , Piero Nicolini

In this work, we present a new construction of black hole solutions in non-commutative gauge theory by applying the Seiberg-Witten map directly to interaction potentials before solving Einstein's equations. This approach provides a…

High Energy Physics - Theory · Physics 2026-05-25 Abdellah Touati

Black holes in noncommutative geometry background are considered to be quantized in accordance with the holographic principle. Incomplete gamma function involving the effective black hole mass is replaced by a discrete sum. The mass…

High Energy Physics - Theory · Physics 2012-06-27 Jong-Phil Lee

Noncommutativity is an idea dating back to the early times of Quantum Mechanics and that string theory induced noncommutative (NC) geometry which provides an effective framework to study short distance spacetime dynamics. Also, string…

General Relativity and Quantum Cosmology · Physics 2018-08-02 Dharm Veer Singh , Md Sabir Ali , Sushant G. Ghosh

One of the notable modifications of General Relativity (GR) is the Rastall gravity. We have studied the polarization modes of Gravitational Waves (GWs) in this gravity. It is found that at a very far distance away from the source of GWs,…

General Relativity and Quantum Cosmology · Physics 2021-08-03 Dhruba Jyoti Gogoi , Umananda Dev Goswami

We introduce a modification in the energy-momentum conservation violating Rastall's theory of gravity and obtain a Reissner-Nordstr\"om-type black hole solution in spacetime surrounded by a cloud of strings and charge fields. We examine the…

General Relativity and Quantum Cosmology · Physics 2024-04-11 Ronit Karmakar , Umananda Dev Goswami

Hamilton-Jacobi ansatz is used to analyze boson charged particles tunneling in Rastall gravity Kerr- Newman black hole (BH) surrounded by perfect fluid matter through the horizon. The geometrical BH parameters are observed, how these are…

General Relativity and Quantum Cosmology · Physics 2022-06-06 Riasat Ali , Kazuharu Bamba , Syed Asif Ali Shah , Muhammad Junaid Saleem

The general theory of relativity is currently the accepted theory of gravity and as such, a large repository of test results has been obtained since its inception in 1915. However, in this paper we only focus on what are considered as the…

General Relativity and Quantum Cosmology · Physics 2020-04-20 Majid Karimabadi , S. Aliasghar Alavi , Davood Mahdavian Yekta

We investigate the black holes in the new massive conformal gravity which is not invariant under conformal transformations because of the presence of the Einstein-Hilbert term. First, we show that the small Schwarzschild black hole is…

General Relativity and Quantum Cosmology · Physics 2019-10-02 Yun Soo Myung , De-Cheng Zou

We study a black hole with a blurred mass density instead of a singular one, which is caused by the noncommutativity of 3-space. Depending on its mass, such object has either none, one or two event horizons. It possesses properties, which…

General Relativity and Quantum Cosmology · Physics 2017-08-31 Samuel Kováčik