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Exact black holes in quadratic gravity with any cosmological constant
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SYSNO ASEP 0497779 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Exact black holes in quadratic gravity with any cosmological constant Author(s) Švarc, R. (CZ)
Podolský, J. (CZ)
Pravda, Vojtěch (MU-W) RID, SAI, ORCID
Pravdová, Alena (MU-W) RID, ORCID, SAIArticle number 231104 Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 121, č. 23 (2018)Number of pages 6 s. Language eng - English Country US - United States Keywords black holes ; quadratic gravity Subject RIV BA - General Mathematics OECD category Applied mathematics Institutional support MU-W - RVO:67985840 UT WOS 000452315100001 EID SCOPUS 85057719305 DOI 10.1103/PhysRevLett.121.231104 Annotation We present a new explicit class of black holes in general quadratic gravity with a cosmological constant. These spherically symmetric Schwarzschild–Bach–(anti-)de Sitter geometries, derived under the assumption of constant scalar curvature, form a three-parameter family determined by the black-hole horizon position, the value of the Bach invariant on the horizon, and the cosmological constant. Using a conformal to Kundt metric ansatz, the fourth-order field equations simplify to a compact autonomous system. Its solutions are found as power series, enabling us to directly set the Bach parameter and/or cosmological constant equal to zero. To interpret these spacetimes, we analyze the metric functions. In particular, we demonstrate that for a certain range of positive cosmological constant there are both black-hole and cosmological horizons, with a static region between them. The tidal effects on free test particles and basic thermodynamic quantities are also determined. Workplace Mathematical Institute Contact Jarmila Štruncová, struncova@math.cas.cz, library@math.cas.cz, Tel.: 222 090 757 Year of Publishing 2019
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