Thermal Behavior of Generalized Black-Bounce Black Hole Model

TL;DR

This paper investigates the thermal properties of a new class of regular black hole models called generalized black-bounce spacetimes, analyzing their temperature, horizon structure, and stability using the Hamilton Jacobi tunneling method.

Contribution

It introduces novel configurations of regular black holes with varying mass functions and geometric deformations, expanding understanding of their thermodynamic behavior.

Findings

All models are free of curvature singularities.

Models can have multiple horizons, including extremal cases.

Geometries often violate classical energy conditions near the bounce.

Abstract

In this work, we tested the thermal behavior of a class of regular black hole solutions defined as generalized black-bounce spacetimes. We introduce several novel configurations governed by different mass functions and geometric deformations, illustrated by parameters controlling regularity and horizon structure. Using the Hamilton Jacobi tunneling method, we compute the Hawking temperature associated with each model and analyze its dependence on the underlying parameters. We find that all proposed geometries are free of curvature singularities and exhibit positive, well defined quasi-local masses in the Hernandez Misner Sharp formalism. Also, we demonstrate that these models may possess multiple horizons, including extremal and asymmetric cases, while typically violating classical energy conditions in the vicinity of the bounce. Our results show and illustrate the structure and thermodynamic stability of these regular solutions.