Dynamics of Scalar Thin-Shell for a Class of Regular Black Holes

TL;DR

This study investigates the dynamics of scalar field thin-shells around regular black holes, revealing different behaviors for massless and massive scalar fields through numerical analysis.

Contribution

It introduces a novel analysis of scalar field thin-shell dynamics in regular black hole spacetimes using Israel formalism and numerical methods.

Findings

Massless scalar shells can collapse, expand, or reach equilibrium.

Massive scalar shells only undergo collapse.

Numerical investigation of scalar field potentials in black hole environments.

Abstract

This paper is devoted to study the dynamical behavior of thin-shell composed of perfect fluid by considering matter field as a scalar field. We formulate equation of motion of the shell by using Israel thin-shell formalism for a class of regular black holes as interior and exterior regions. The corresponding scalar fields and effective potentials are investigated numerically for both massless and massive scalar fields. We conclude that massless scalar shell leads to collapse, expansion and equilibrium while the massive case leads to collapse only.