Quantum-Corrected Deformation of RN-AdS Black Holes with a Cloud of Strings Immersed in Quintessential-like Fluid

TL;DR

This paper explores quantum-corrected Reissner-Nordström-AdS black holes with a string cloud and quintessence-like fluid, analyzing their optical, particle dynamics, and thermodynamic properties to understand the influence of various parameters.

Contribution

It introduces a novel quantum-corrected black hole model incorporating a string cloud and quintessence, analyzing its geodesic and thermodynamic properties in detail.

Findings

Photon trajectories and shadow are affected by quantum and string parameters.

Stable circular orbits and ISCO radii depend on the black hole's physical parameters.

Thermodynamic quantities like temperature and entropy are significantly influenced by the model's parameters.

Abstract

Inspired by Loop Quantum Gravity (LQG), we investigate the Reissner-Nordstr\"om (RN) black hole (BH) solution coupled with a cloud of strings in an anti-de Sitter (AdS) background, surrounded by a quintessence-like fluid. We begin by analyzing the optical properties of the BH through null geodesic motion, deriving an effective potential that governs photon dynamics. This effective potential is central to understanding key phenomena such as photon trajectories, circular null orbits, photon sphere, and the resulting BH shadow. Subsequently, we study the dynamics of neutral test particles by deriving effective potential that describes their motion. Using the potential, we compute the specific energy and specific angular momentum of neutral particles in circular orbits around the BH and analyze the outcomes. We also investigate the innermost stable circular orbits (ISCO) and demonstrate how various geometrical and physical properties influence the radius of ISCO. Furthermore, we explore the thermodynamic properties of the BH solution by deriving key quantities such as the Hawking temperature, entropy, Gibbs free energy, internal energy, and specific heat capacity. Throughout the study, we demonstrate that the geodesic structure, scalar field behavior, and thermodynamic properties are significantly influenced by parameters such as the string cloud, quantum correction, electric charge, the surrounding quintessence-like fluid, and the AdS curvature radius.