Covariant conserved currents for scalar-tensor Horndeski theory

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10390189" target="_blank" >RIV/00216208:11320/18:10390189 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21340/18:00328085

Result on the web

<a href="https://doi.org/10.1063/1.5003190" target="_blank" >https://doi.org/10.1063/1.5003190</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5003190" target="_blank" >10.1063/1.5003190</a>

Result language

angličtina

Original language name

Covariant conserved currents for scalar-tensor Horndeski theory

Original language description

The scalar-tensor theories have become popular recently in particular in connection with attempts to explain present accelerated expansion of the universe, but they have been considered as a natural extension of general relativity long time ago. The Horndeski scalar-tensor theory involving four invariantly defined Lagrangians is a natural choice since it implies field equations involving at most second derivatives. Following the formalisms of defining covariant global quantities and conservation laws for perturbations of spacetimes in standard general relativity, we extend these methods to the general Horndeski theory and find the covariant conserved currents for all four Lagrangians. The current is also constructed in the case of linear perturbations involving both metric and scalar fields. As a specific illustration, we derive a superpotential that leads to the covariantly conserved current in the Branse-Dicke theory.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10300 - Physical sciences

Project

<a href="/en/project/GB14-37086G" target="_blank" >GB14-37086G: Albert Einstein Center for Gravitation and Astrophysics</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Mathematical Physics

ISSN

0022-2488

e-ISSN

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Volume of the periodical

59

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

22

Pages from-to

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UT code for WoS article

000431271800022

EID of the result in the Scopus database

2-s2.0-85045103955