Neutral test particle dynamics around the Bardeen-AdS black hole surrounded by quintessence dark energy

TL;DR

This paper investigates the motion of neutral particles around a Bardeen-AdS black hole influenced by quintessence dark energy, revealing how quintessence affects orbital stability and induces chaos in particle trajectories.

Contribution

It provides a detailed analysis of how quintessence dark energy modifies particle dynamics and introduces chaos in the context of Bardeen-AdS black holes.

Findings

Quintessence increases the ISCO radius.

Presence of quintessence induces chaotic particle motion.

Chaos amplifies with increasing particle energy.

Abstract

Dynamics of neutral test particles in the spacetime of a Bardeen AdS black hole surrounded by quintessence dark energy is studied. First, we analyze the properties of the black hole and possible values of the monopole charge and quintessential parameters that allows the existence of the event horizon. The effects of the parameters on the effective potential and the innermost stable circular orbit radius are also studied. For the neutral test particles motion, it is shown that as the quintessential parameters increase, the radius of ISCO be increased. We have analyzed the dynamical behaviors of the neutral test particles by applying techniques including Poincar'e sections, power density and bifurcation diagram. It is shown that the presence of a quintessence parameter creates the chaotic phenomenon for the motion of neutral particle in a Bardeen AdS black hole spacetime. The amplification of chaos typically occurs as the energy increases under appropriate circumstances.