Strong Cosmic Censorship in Charged de Sitter spacetime with Scalar Field Non-minimally Coupled to Curvature

Understand

We examine the stability and the strong cosmic censorship in the Reissner-Nordstrom-de Sitter (RN-dS) black hole by investigating the evolution of a scalar field non-minimally coupled to the curvature.

• We find that when the coupling parameter is negative, the RN-dS black hole experiences instability.
• The instability disappears when the coupling parameter becomes non-negative.
• With the increase of the coupling parameter, the violation of the strong cosmic censorship occurs at a larger critical charge ratio.