On the physical process first law for dynamical black holes

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dc.contributor.author Mishra, Akash
dc.contributor.author Chakraborty, Sumanta
dc.contributor.author Ghosh, Avirup
dc.contributor.author Sarkar, Sudipta
dc.date.accessioned 2018-09-28T07:03:10Z
dc.date.available 2018-09-28T07:03:10Z
dc.date.issued 2018-09
dc.identifier.citation Mishra, Akash; Chakraborty, Sumanta; Ghosh, Avirup and Sarkar, Sudipta, "On the physical process first law for dynamical black holes", Journal of High Energy Physics, DOI: 10.1007/JHEP09(2018)034, vol. 9, no. 34, Sep. 2018. en_US
dc.identifier.issn 1029-8479
dc.identifier.uri https://doi.org/10.1007/JHEP09(2018)034
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3918
dc.description.abstract Physical process version of the first law of black hole mechanics relates the change in entropy of a perturbed Killing horizon, between two asymptotic cross sections, to the matter flow into the horizon. Here, we study the mathematical structure of the physical process first law for a general diffeomorphism invariant theory of gravity. We analyze the effect of ambiguities in the Wald's definition of entropy on the physical process first law. We show that for linearized perturbations, the integrated version of the physical process law, which determines the change of entropy between two asymptotic cross-sections, is independent of these ambiguities. In case of entropy change between two intermediate cross sections of the horizon, we show that it inherits additional contributions, which coincide with the membrane energy associated with the horizon fluid. Using this interpretation, we write down a physical process first law for entropy change between two arbitrary non-stationary cross sections of the horizon for both general relativity and Lanczos-Lovelock gravity.
dc.description.statementofresponsibility by Akash Mishra, Sumanta Chakraborty, Avirup Ghosh and Sudipta Sarkar
dc.format.extent vol. 2018, no. 9
dc.language.iso en en_US
dc.publisher Springer en_US
dc.subject Black Holes en_US
dc.subject Classical Theories of Gravity en_US
dc.title On the physical process first law for dynamical black holes en_US
dc.type Article en_US
dc.relation.journal Journal of High Energy Physics

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