Spacetimes dressed with stealth electromagnetic fields

Smolić, Ivica (2018) Spacetimes dressed with stealth electromagnetic fields. Physical Review D, 97 (8). pp. 84041-6. ISSN 1550-7998

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Abstract

Stealth field configurations by definition have a vanishing energy-momentum tensor, and thus do not contribute to the gravitational field equations. While only trivial fields can be stealth in Maxwell’s electrodynamics, nontrivial stealth fields appear in some nonlinear models of electromagnetism. We find the necessary and sufficient conditions for the electromagnetic fields to be stealth and analyze which models admit such configurations. Furthermore, we present some concrete exact solutions, featuring a class of black holes dressed with the stealth electromagnetic hair, closely related to force-free solutions. Stealth hair does not alter the generalized Smarr formula, but may contribute to the Komar charges.

Item Type: Article
Keywords: Einstein-Maxwell spacetimes, classical black holes, black hole thermodynamics
Date: April 2018
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2018 American Physical Society. Received 15 January 2018. Published 23 April 2018.
Divisions: Faculty of Science > Department of Physics
Project code: UIP-2013-11-8946
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 17 May 2018 13:17
Last Modified: 17 May 2018 13:17
URI: http://digre.pmf.unizg.hr/id/eprint/5821

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