English

Noncommutative black hole in de Rham-Gabadadze-Tolley like massive gravity

General Relativity and Quantum Cosmology 2024-04-17 v1

Abstract

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 all. Our results imply the existence of a stable black hole remnant, whose mass can be uniquely calculated in terms of the non-commutative parameter θ\theta and gravity mass mm. Thermodynamic features such as heat capacity and Hawking temperature are studied. We also examine a scalar linear perturbation on the black hole. Quasinormal frequencies are computed via Wentzel-Kramers-Brillouin(WKB) method with Pade improvement. All quasinormal frequencies considered in this work have a negative imaginary part. In the eikonal limit, we investigate the angular velocity and the Lyapunov exponent as a function of M/θM/\sqrt{\theta}. Additionally, we explore the black hole's shadow across various model parameters. Our findings indicate that non-commutativity leads to a reduction in the black hole's shadow, with this effect exhibiting a nonlinear relationship. Furthermore, we observe that the inclusion of a massive graviton in the theory results in an increase in the black hole's shadow radius, particularly at greater observer distances.

Keywords

Cite

@article{arxiv.2404.10627,
  title  = {Noncommutative black hole in de Rham-Gabadadze-Tolley like massive gravity},
  author = {Piyali Bhar and Dhruba Jyoti Gogoi and Supakchai Ponglertsakul},
  journal= {arXiv preprint arXiv:2404.10627},
  year   = {2024}
}

Comments

19 pages, 17 figures, 1 table