Stability properties of Regular Black Holes

Understand

Black holes encountered in general relativity are characterized by spacetime singularities hidden within an event horizon.

• These singularities provide a key motivation to go beyond general relativity and look for regular black holes where the spacetime curvature remains bounded everywhere.
• A prominent mechanism achieving this replaces the singularity by a regular patch of de Sitter space.
• The resulting regular geometries exhibit two horizons: the outer event horizon is supplemented by an inner Cauchy horizon.