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Title: Thermodynamics of hairy black holes in Lovelock gravity
Authors: Hennigar, Robie A.
Tjoa, Erickson
Mann, Robert B.
Keywords: Classical Theories of Gravity
Black Holes
Issue Date: 2017
Source: Hennigar, R. A., Tjoa, E., & Mann, R. B. (2017). Thermodynamics of hairy black holes in Lovelock gravity. Journal of High Energy Physics, 2017(2), 70-.
Series/Report no.: Journal of High Energy Physics
Abstract: We perform a thorough study of the thermodynamic properties of a class of Lovelock black holes with conformal scalar hair arising from coupling of a real scalar field to the dimensionally extended Euler densities. We study the linearized equations of motion of the theory and describe constraints under which the theory is free from ghosts/tachyons. We then consider, within the context of black hole chemistry, the thermodynamics of the hairy black holes in the Gauss-Bonnet and cubic Lovelock theories. We clarify the connection between isolated critical points and thermodynamic singularities, finding a one parameter family of these critical points which occur for well-defined thermodynamic parameters. We also report on a number of novel results, including ‘virtual triple points’ and the first example of a ‘λ-line’ — a line of second order phase transitions — in black hole thermodynamics.
ISSN: 1126-6708
DOI: 10.1007/JHEP02(2017)070
Rights: © 2017 The Author(s). This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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