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    The compressibility of rotating black holes in D-dimensions


    Dolan, Brian P. (2013) The compressibility of rotating black holes in D-dimensions. Working Paper. Dublin Institute for Advanced Studies DIAS-STP-13-08.

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    Abstract

    Treating the cosmological constant as a pressure, in the context of black hole thermodynamics, a thermodynamic volume for the black hole can be defined as being the thermodynamic variable conjugate to the pressure, in the sense of a Legendre transform. The thermodynamic volume is explicitly calculated, as the Legendre transform of the pressure in the enthalpy, for a rotating asymptotically anti-de Sitter Myers-Perry black hole in D spacetime dimensions. The volume obtained is shown to agree with previous calculations using the Smarr relation. The compressibility is calculated and shown to be non-negative and bounded. Taking the limit of zero cosmological constant, the compressibility of a rotating black hole in asymptotically flat space-times is determined and the corresponding speed of sound computed. The latter is bounded above and has an elegant expression purely in terms of the angular momenta, in the form of quartic and quadratic Casimirs of the rotation group, SO(D − 1).

    Item Type: Monograph (Working Paper)
    Additional Information: A version of this article has been published in Classical and Quantum Gravity (2014) Vol.31 035022 (14pp) ISSN 0264-9381. doi:10.1088/0264-9381/31/3/035022
    Keywords: compressibility; rotating black holes; D-dimensions; cosmological constant; thermodynamic;
    Academic Unit: Faculty of Science and Engineering > Mathematical Physics
    Item ID: 4445
    Depositing User: Dr. Brian Dolan
    Date Deposited: 03 Sep 2013 13:23
    Publisher: Dublin Institute for Advanced Studies DIAS-STP-13-08
    URI:

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