Towards a Non-singular Paradigm of Black Hole Physics

TL;DR

This paper reviews the recent progress and ongoing challenges in developing regular black holes and mimickers as non-singular alternatives to classical black holes, highlighting future research directions.

Contribution

It provides an overview of the current state, challenges, and promising research avenues in the study of non-singular black hole models.

Findings

Identification of key challenges in regular black hole research

Summary of recent advances in observational techniques

Outline of promising future research directions

Abstract

The study of regular black holes and black hole mimickers as alternatives to standard black holes has recently gained significant attention, driven both by the need to extend general relativity to describe black hole interiors, and by recent advances in observational technologies. Despite considerable progress in this field, significant challenges remain in identifying and characterizing physically well-motivated classes of regular black holes and black hole mimickers. This report provides an overview of these challenges, and outlines some of the promising research directions -- as discussed during a week-long focus programme held at the Institute for Fundamental Physics of the Universe (IFPU) in Trieste from November 11th to 15th, 2024.