Decreasing entropy of dynamical black holes in critical gravity

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10390204" target="_blank" >RIV/00216208:11320/18:10390204 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/JHEP06(2018)118" target="_blank" >https://doi.org/10.1007/JHEP06(2018)118</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP06(2018)118" target="_blank" >10.1007/JHEP06(2018)118</a>

Result language
angličtina
Original language name
Decreasing entropy of dynamical black holes in critical gravity
Original language description
Critical gravity is a quadratic curvature gravity in four dimensions which is ghost-free around the AdS background. Constructing a Vaidya-type exact solution, we show that the area of a black hole defined by a future outer trapping horizon can shrink by injecting a charged null fluid with positive energy density, so that a black hole is no more a one-way membrane even under the null energy condition. In addition, the solution shows that the Wald-Kodama dynamical entropy of a black hole is negative and can decrease. These properties expose the pathological aspects of critical gravity at the non-perturbative level.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences

Project
<a href="/en/project/GA17-01625S" target="_blank" >GA17-01625S: Spacetimes and Fields in Einstein's Theory of Gravity and its Generalizations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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