Asymptotic dynamics and charges for FLRW spacetimes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00636698" target="_blank" >RIV/68378271:_____/23:00636698 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.107.024039" target="_blank" >https://doi.org/10.1103/PhysRevD.107.024039</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.107.024039" target="_blank" >10.1103/PhysRevD.107.024039</a>
Alternative languages
Result language
angličtina
Original language name
Asymptotic dynamics and charges for FLRW spacetimes
Original language description
We investigate the asymptotia of decelerating and spatially flat Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetimes at future null infinity. We find that the asymptotic algebra of diffeomorphisms can be enlarged to the recently discovered Weyl-Bondi-van der Burg-Metzner-Sachs (BMS) algebra for asymptotically flat spacetimes by relaxing the boundary conditions. This algebra remains undeformed in the cosmological setting contrary to previous extensions of the BMS algebra. We then study the equations of motion for asymptotically FLRW spacetimes with finite fluxes and show that the dynamics is fully constrained by the energy-momentum tensor of the source. Finally, we propose an expression for the charges that are associated with the cosmological supertranslations and whose evolution equation features a novel contribution arising from the Hubble-Lemaitre flow.
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
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/EF15_003%2F0000437" target="_blank" >EF15_003/0000437: Cosmology, Gravity and the Dark Sector of the Universe</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
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
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
107
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
024039
UT code for WoS article
001030152100009
EID of the result in the Scopus database
2-s2.0-85147432258