Critical orbits in Schwarzschild black hole with quintessence and string cloud background space-times

TL;DR

This paper investigates the geodesic structure around Schwarzschild black holes influenced by quintessence and string cloud parameters, revealing how these parameters affect horizon structures and critical orbits.

Contribution

It provides a detailed analysis of how quintessence and string cloud parameters alter the horizon structure and critical orbits in Schwarzschild black hole spacetimes.

Findings

Presence of two horizon structures due to quintessence

Coordinate time variations influenced by parameters

Existence of critical orbits depending on parameter values

Abstract

In this paper, we have examined the geodesic structure of the spacetime surrounding Schwarzschild black holes in the presence of a quintessence field parameter $q$ and string cloud parameter $a$. Because of the quintessence field, there are two horizon structures and coordinate time $t$ shows some fascinating variations due to the parameters. We do a thorough investigation of the existence of critical orbits for various parameter values.