Some remarks on non-singular spherically symmetric space-times

Understand

A short review on spherically symmetric static regular black holes and spherically symmetric non singular cosmological space-time is presented.

• Several models of regular black holes, including new ones, are considered.
• First, a large class of regular black holes having an inner de Sitter core with the related issue of Cauchy horizon is investigated.
• Then, black bounce space-times, where the Cauchy horizon and therefore the related instabilities are absent, are discussed as valid alternatives of regular black holes with inner de Sitter core.