Regular Schwarzschild black holes and cosmological models

Understand

We study regular Schwarzschild black holes in General Relativity as an alternative to the singular counterpart.

• We analyze two types of solutions which are completely parameterised by the ADM mass alone.
• We find that both families of regular solutions contain a de Sitter condensate at the core and admit (quasi) extremal black hole configurations in which the two horizons are arbitrarily close.
• Cosmological models based on these regular configurations are also analyzed, finding that they describe non-trivial Kantowski-Sachs universes free of singularities.