Stationary rotating black holes in theories with gravitational Chern-Simons Lagrangian term

Bonora, Loriano and Cvitan, Maro and Dominis Prester, Predrag and Pallua, Silvio and Smolić, Ivica (2013) Stationary rotating black holes in theories with gravitational Chern-Simons Lagrangian term. Physical Review D, 87 (2). pp. 24047-18. ISSN 1550-7998

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Abstract

We study the effects of introducing purely gravitational Chern-Simons Lagrangian terms in ordinary Einstein gravity on stationary rotating black hole solutions and on the associated thermodynamical properties, in a generic number of dimensions which support these terms (i.e., in D=4k−1). We analyze the conditions, namely the number of vanishing angular momenta, under which the contributions of the Chern-Simons term to the equations of motion and the black hole entropy vanish. The particular case of a seven-dimensional theory in which a purely gravitational Chern-Simons term is added to the Einstein-Hilbert Lagrangian in D=7 dimensions is investigated in some detail. As we have not been able to find exact analytic solutions in nontrivial cases, we turn to perturbation theory and calculate the first-order perturbative correction to the Myers-Perry metric in the case where all angular momenta are equal. The expansion parameter is a dimensionless combination linear in the Chern-Simons coupling constant and the angular momentum. Corrections to horizon and ergosurface properties, as well as black hole entropy and temperature, are presented.

Item Type: Article
Keywords: rotating black holes, gravitational Chern-Simons terms
Date: January 2013
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2013) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982930-1016
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 26 Aug 2014 12:23
Last Modified: 23 Feb 2016 15:29
URI: http://digre.pmf.unizg.hr/id/eprint/2218

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