Quasi-geodesics in relativistic gravity.
Journal
The European physical journal. C, Particles and fields
ISSN: 1434-6044
Titre abrégé: Eur Phys J C Part Fields
Pays: France
ID NLM: 101622319
Informations de publication
Date de publication:
2021
2021
Historique:
received:
16
11
2020
accepted:
24
12
2020
entrez:
25
1
2021
pubmed:
26
1
2021
medline:
26
1
2021
Statut:
ppublish
Résumé
A four-force parallel to the trajectory of a massive particle can always be eliminated by going to an affine parametrization, but the affine parameter is different from the proper time. The main application is to cosmology, in which elements of the cosmic fluid are subject to a pressure gradient parallel to their four-velocities. Natural implementations of parallel four-forces occur when the particle mass changes, in scalar-tensor cosmology, and in cosmic antifriction due to particle production.
Identifiants
pubmed: 33488277
doi: 10.1140/epjc/s10052-020-08808-9
pii: 8808
pmc: PMC7806573
doi:
Types de publication
Journal Article
Langues
eng
Pagination
22Informations de copyright
© The Author(s) 2021.
Références
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pubmed: 10020615
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pubmed: 10041656
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pubmed: 10045622
Eur Phys J C Part Fields. 2020;80(8):771
pubmed: 32922164