Author(s)

Miguel Socolovsky

Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de México, México.

The application of the Unruh procedure to the Rindler approximation of the Kerr-Newman metric in the neighborhood of the event and Cauchy horizons leads, unambiguously, to the well-known positive Hawking (black hole) temperature at the outer horizon, but to a negative (white hole) temperature at the inner horizon. Some consequences for the heat capacities and the status of the third law of thermodynamics are also discussed.

Kerr-Newman Metric, Cauchy Horizon, Negative Temperature

Socolovsky, M. (2022) Kerr-Newman Black Holes and Negative Temperatures. Journal of High Energy Physics, Gravitation and Cosmology, 8, 940-947. doi: 10.4236/jhepgc.2022.84065.