Does nonlocal gravity yield divergent gravitational energy-momentum fluxes?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00520322" target="_blank" >RIV/68378271:_____/19:00520322 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/physrevd.99.044052" target="_blank" >https://doi.org/10.1103/physrevd.99.044052</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.99.044052" target="_blank" >10.1103/PhysRevD.99.044052</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Does nonlocal gravity yield divergent gravitational energy-momentum fluxes?

Popis výsledku v původním jazyce

Energy-momentum conservation requires the associated gravitational fluxes on an asymptotically flat spacetime to scale as 1/r2, as r → ∞, where r is the distance between the observer and the source of the gravitational waves.We expand the equations of motion for the Deser-Woodard nonlocal gravity model up to quadratic order in metric perturbations, to compute its gravitational energy-momentum flux due to an isolated system. The contributions from the nonlocal sector contains 1/r terms proportional to the acceleration of the Newtonian energy of the system, indicating such nonlocal gravity models may not yield well-defined energy fluxes at infinity.In the case of the Deser-Woodard model,this divergent flux can be avoided by requiring the first and second derivatives of the nonlocal distortion function f[X] at X = 0 to be zero, i.e., f'[0] = 0 = f

Název v anglickém jazyce

Does nonlocal gravity yield divergent gravitational energy-momentum fluxes?

Popis výsledku anglicky

Energy-momentum conservation requires the associated gravitational fluxes on an asymptotically flat spacetime to scale as 1/r2, as r → ∞, where r is the distance between the observer and the source of the gravitational waves.We expand the equations of motion for the Deser-Woodard nonlocal gravity model up to quadratic order in metric perturbations, to compute its gravitational energy-momentum flux due to an isolated system. The contributions from the nonlocal sector contains 1/r terms proportional to the acceleration of the Newtonian energy of the system, indicating such nonlocal gravity models may not yield well-defined energy fluxes at infinity.In the case of the Deser-Woodard model,this divergent flux can be avoided by requiring the first and second derivatives of the nonlocal distortion function f[X] at X = 0 to be zero, i.e., f'[0] = 0 = f

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

—

Svazek periodika

99

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

000459912000009

EID výsledku v databázi Scopus

2-s2.0-85062359401