Professor T. Padmanabhan

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Author: search.filters.author.Sarkar, SudiptaSubject: search.filters.subject.Entropy

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    Entropy increase during physical processes for black holes in Lanczos-Lovelock gravity
    (American physical society, 2012-07-03) Padmanabhan, T.; Kolekar, Sanved; Sarkar, Sudipta
    We study quasistationary physical process for black holes within the context of Lanczos-Lovelock gravity. We show that the Wald entropy of the stationary black holes in Lanczos-Lovelock gravity monotonically increases for quasistationary physical processes in which the horizon is perturbed by the accretion of positive energy matter and the black hole ultimately settles down to a stationary state. This result reinforces the physical interpretation of Wald entropy for Lanczos-Lovelockmodels and takes a step towards proving the analogue of the black hole area increase theorem in a wider class of gravitational theories.