Horndeski speed tests with scalar-photon couplings
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00618951" target="_blank" >RIV/68378271:_____/25:00618951 - isvavai.cz</a>
Výsledek na webu
<a href="https://hdl.handle.net/11104/0365746" target="_blank" >https://hdl.handle.net/11104/0365746</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1475-7516/2025/01/041" target="_blank" >10.1088/1475-7516/2025/01/041</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Horndeski speed tests with scalar-photon couplings
Popis výsledku v původním jazyce
We revisit multi-messenger constraints from neutron star mergers on the speed ofpropagation of gravitational and electromagnetic waves in Horndeski and beyond Horndeskitheories. By considering non-trivial couplings between the dark energy field and theelectromagnetic sector, the electromagnetic wave can propagate through the cosmological backgroundat non-unit speed, altering the phenomenological constraints on its gravitational counterpart. Inparticular, we show that recent models derived from a Kaluza-Klein compactification of higherdimensional Horndeski models fall into a broader class of theories disformally related to thosewhose gravitational waves propagate with unit speed. This disformal equivalence can, however, bebroken by the gravitational couplings to other sectors with interesting phenomenologicalconsequences. We also consider higher order couplings between the scalar and the photon withsecond order field equations, and show that they are not compatible with constraints coming frommulti-messenger speed tests and the decay of the gravitational wave.
Název v anglickém jazyce
Horndeski speed tests with scalar-photon couplings
Popis výsledku anglicky
We revisit multi-messenger constraints from neutron star mergers on the speed ofpropagation of gravitational and electromagnetic waves in Horndeski and beyond Horndeskitheories. By considering non-trivial couplings between the dark energy field and theelectromagnetic sector, the electromagnetic wave can propagate through the cosmological backgroundat non-unit speed, altering the phenomenological constraints on its gravitational counterpart. Inparticular, we show that recent models derived from a Kaluza-Klein compactification of higherdimensional Horndeski models fall into a broader class of theories disformally related to thosewhose gravitational waves propagate with unit speed. This disformal equivalence can, however, bebroken by the gravitational couplings to other sectors with interesting phenomenologicalconsequences. We also consider higher order couplings between the scalar and the photon withsecond order field equations, and show that they are not compatible with constraints coming frommulti-messenger speed tests and the decay of the gravitational wave.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10303 - Particles and field physics
Návaznosti výsledku
Projekt
<a href="/cs/project/GM21-16583M" target="_blank" >GM21-16583M: Nové cesty při hledání temné energie</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Cosmology and Astroparticle Physics
ISSN
1475-7516
e-ISSN
1475-7516
Svazek periodika
2025
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
17
Strana od-do
041
Kód UT WoS článku
001540906300011
EID výsledku v databázi Scopus
2-s2.0-85215707472