Second-order gravitational self-force in a highly regular gauge: Covariant and coordinate punctures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00586911" target="_blank" >RIV/67985815:_____/24:00586911 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0354281" target="_blank" >https://hdl.handle.net/11104/0354281</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.109.044021" target="_blank" >10.1103/PhysRevD.109.044021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Second-order gravitational self-force in a highly regular gauge: Covariant and coordinate punctures

Popis výsledku v původním jazyce

Gravitational self-force theory is the primary way of modeling extreme-mass-ratio inspirals (EMRIs). One difficulty that appears in second-order self-force calculations is the strong divergence at the worldline of the small object, which causes both numerical and analytical issues. Previous work [Phys. Rev. D 95, 104056 (2017), 10.1103/PhysRevD.95.104056, Phys. Rev. D 103, 124016 (2021), 10.1103/PhysRevD.103.124016] demonstrated that this could be alleviated within a class of highly regular gauges and presented the metric perturbations in these gauges in a local coordinate form. We build on this previous work by deriving expressions for the highly regular gauge metric perturbations in both fully covariant form and as a generic coordinate expansion. With the metric perturbations in covariant or generic coordinate form, they can easily be expressed in any convenient coordinate system. These results can then be used as input into a puncture scheme in order to solve the field equations describing an EMRI.

Název v anglickém jazyce

Second-order gravitational self-force in a highly regular gauge: Covariant and coordinate punctures

Popis výsledku anglicky

Gravitational self-force theory is the primary way of modeling extreme-mass-ratio inspirals (EMRIs). One difficulty that appears in second-order self-force calculations is the strong divergence at the worldline of the small object, which causes both numerical and analytical issues. Previous work [Phys. Rev. D 95, 104056 (2017), 10.1103/PhysRevD.95.104056, Phys. Rev. D 103, 124016 (2021), 10.1103/PhysRevD.103.124016] demonstrated that this could be alleviated within a class of highly regular gauges and presented the metric perturbations in these gauges in a local coordinate form. We build on this previous work by deriving expressions for the highly regular gauge metric perturbations in both fully covariant form and as a generic coordinate expansion. With the metric perturbations in covariant or generic coordinate form, they can easily be expressed in any convenient coordinate system. These results can then be used as input into a puncture scheme in order to solve the field equations describing an EMRI.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

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

2470-0029

Svazek periodika

109

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

044021

Kód UT WoS článku

001175021900010

EID výsledku v databázi Scopus

2-s2.0-85184895628