Luminal propagation of gravitational waves in scalar-tensor theories: The case for torsion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985840%3A_____%2F19%3A00540212" target="_blank" >RIV/67985840:_____/19:00540212 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.100.124039" target="_blank" >https://doi.org/10.1103/PhysRevD.100.124039</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.100.124039" target="_blank" >10.1103/PhysRevD.100.124039</a>
Alternative languages
Result language
angličtina
Original language name
Luminal propagation of gravitational waves in scalar-tensor theories: The case for torsion
Original language description
Scalar-tensor gravity theories with a nonminimal Gauss-Bonnet coupling typically lead to an anomalous propagation speed for gravitational waves, and have therefore been tightly constrained by multimessenger observations such as GW170817/GRB170817A. In this paper we show that this is not a general feature of scalar-tensor theories, but rather a consequence of assuming that spacetime torsion vanishes identically. At least for the case of a nonminimal Gauss-Bonnet coupling, removing the torsionless condition restores the canonical dispersion relation and therefore the correct propagation speed for gravitational waves. To achieve this result we develop a new approach, based on the first-order formulation of gravity, to deal with perturbations on these Riemann-Cartan geometries.
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
10101 - Pure mathematics
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
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: Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998
e-ISSN
—
Volume of the periodical
100
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
124039
UT code for WoS article
000502791100011
EID of the result in the Scopus database
2-s2.0-85077457634