Mergers of hairy black holes: Constraining topological couplings from entropy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00636679" target="_blank" >RIV/68378271:_____/24:00636679 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0367773" target="_blank" >https://hdl.handle.net/11104/0367773</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.110.064032" target="_blank" >10.1103/PhysRevD.110.064032</a>
Alternative languages
Result language
angličtina
Original language name
Mergers of hairy black holes: Constraining topological couplings from entropy
Original language description
Hairy black-holes are a unique prediction of certain theories that extend general relativity (GR) with a scalar field. The presence of scalar hair is reflected nontrivially in the entropy of the black hole along with any topological coupling that may be present in the action. Demanding that a system of two merging black holes obeys the global second law of thermodynamics imposes a bound on this topological coupling coefficient. In this work we study how this bound is pushed from its GR value by the presence of scalar hair by considering estimates of binary black-hole merger parameters through inference studies of both mock and real gravitational-wave (GW) events. Although the scalar charge may produce a statistically significant deviation of the change in entropy over the GR prediction, we find no evidence of this happening in the data from real GW events taken from GWTC-1. We also find the entropy change to be susceptible to biases arising out of GW inferences which ends up being two orders of magnitude larger, therefore overwhelming any change, if at all, induced by the scalar hair.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
110
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
064032
UT code for WoS article
001361612900022
EID of the result in the Scopus database
2-s2.0-85204154841