An analysis of a regular black hole interior

Daniela Pérez ... [et al.].

Serie: Trabajos publicados del IAR ; no. 1115

8th Alexander Friedmann International Seminar.

In this work we address the issue of the thermodynamic behavior of a non-singular spherically symmetric black hole model introduced by Mbonye and Kanzanas (2005). This spacetime is described by Schwarschild's solution at large radius and by a de Sitterlike solution at small radius. The interior of the black hole consists of matter fields with sound speed bounded by the speed of light. The matter transits smoothly between normal matter and a core of an exotic fluid with an equation of state that approaches p = -p whrn r --> 0. We derive the general equations of the thermodynamic quantities for an arbitrary matter density profile, and adjust the results to the specific regular black hole. We also calculate the Weyl and Kretschmann scalars and analyze the behavior of the gravitational field in conection with the thermodynamics of the black hole, and we discuss a possible physical interpretation of the state of regular black hole interiors.