Large black-hole scalar charges induced by cosmology in Horndeski theories
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00637535" target="_blank" >RIV/68378271:_____/25:00637535 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0368389" target="_blank" >https://hdl.handle.net/11104/0368389</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/bv8z-qbfj" target="_blank" >10.1103/bv8z-qbfj</a>
Alternative languages
Result language
angličtina
Original language name
Large black-hole scalar charges induced by cosmology in Horndeski theories
Original language description
The regularity of black-hole solutions, embedded in an expanding universe, is studied in a subclass of Horndeski theories, namely the sum of the simplest quadratic, cubic, and quintic actions. We find that in the presence of a time derivative of the scalar field, driven by the cosmological expansion, this regularity generically imposes large scalar charges for black holes, even when assuming strictly no direct coupling of matter to the scalar field. Such charges cause a significant accretion of the scalar field by the black holes, driving its local time derivative to a small value. This phenomenon, together with the Vainshtein screening typical of these theories, strongly suppresses observable scalar effects. We show that this full class of models is consistent with LIGO/Virgo detections of gravitational waves, but that the LISA mission should be able to constrain the coefficient of the quintic term at the 10−30 level in a self-acceleration scenario, an improvement by 16 orders of magnitude with respect to what is imposed by the speed of gravitational waves.
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
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
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
112
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
30
Pages from-to
024043
UT code for WoS article
001537792400014
EID of the result in the Scopus database
2-s2.0-105021379431