Can Bekenstein's area law prevail in modified theories of gravity?

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476627" target="_blank" >RIV/00216208:11320/23:10476627 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=vaCDyxK7PE" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=vaCDyxK7PE</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.108.L121501" target="_blank" >10.1103/PhysRevD.108.L121501</a>

Result language
angličtina
Original language name
Can Bekenstein's area law prevail in modified theories of gravity?
Original language description
According to Bekenstein's area law, the black hole entropy is identified holographically with one quarter of the horizon area. However, it is commonly believed that such a law is only valid in Einstein's theory and that higher curvature corrections generically give rise to its modifications. This is, for example, the case of black holes in Lovelock gravities, or their four-dimensional cousins in the recently discovered 4D scalartensor Gauss-Bonnet gravity where one naively "finds" (classical) logarithmic corrections to the Bekenstein's law. In this paper we argue that such logarithmic corrections originate from ignoring the shift symmetry of the 4D Gauss-Bonnet gravity. When this symmetry is properly taken into account, there is no longer any departure from the area law in this theory. Moreover, the first law remains valid upon modifying the black hole temperature, which can be derived via the Euclidean grand canonical ensemble (Brown-York) procedure, but is no longer given by the surface gravity. Interestingly, we show that upon similar modification of the black hole temperature the area law can also prevail for black holes in higherdimensional Lovelock gravities.
Czech name
—
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/GA23-07457S" target="_blank" >GA23-07457S: Hidden Symmetries and Black Hole Chemistry</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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