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Universal p-form black holes in generalized theories of gravity
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SYSNO ASEP 0534199 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Universal p-form black holes in generalized theories of gravity Author(s) Hervik, S. (NO)
Ortaggio, Marcello (MU-W) RID, SAI, ORCIDArticle number 1020 Source Title European Physical Journal C. - : Springer - ISSN 1434-6044
Roč. 80, č. 11 (2020)Number of pages 10 s. Language eng - English Country DE - Germany Keywords black holes ; modified gravity ; electromagnetic fields Subject RIV BA - General Mathematics OECD category Pure mathematics R&D Projects GA19-09659S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support MU-W - RVO:67985840 UT WOS 000590064800003 EID SCOPUS 85094965049 DOI 10.1140/epjc/s10052-020-08571-x Annotation We explore how far one can go in constructing d-dimensional static black holes coupled to p-form and scalar fields before actually specifying the gravity and electrodynamics theory one wants to solve. At the same time, we study to what extent one can enlarge the space of black hole solutions by allowing for horizon geometries more general than spaces of constant curvature. We prove that a generalized Schwarzschild-like ansatz with an arbitrary isotropy-irreducible homogeneous base space (IHS) provides an answer to both questions, up to naturally adapting the gauge fields to the spacetime geometry. In particular, an IHS-Kähler base space enables one to construct magnetic and dyonic 2-form solutions in a large class of theories, including non-minimally couplings. We exemplify our results by constructing simple solutions to particular theories such as R2, Gauss–Bonnet and (a sector of) Einstein-Horndeski gravity coupled to certain p-form and conformally invariant electrodynamics. Workplace Mathematical Institute Contact Jarmila Štruncová, struncova@math.cas.cz, library@math.cas.cz, Tel.: 222 090 757 Year of Publishing 2021 Electronic address https://doi.org/10.1140/epjc/s10052-020-08571-x
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