Bohmer, Christian G;
del Sordo, Antonio d'Alfonso;
Hartmann, Betti;
Muench, Linus Elias;
(2024)
Azimuthal geodesics in closed FLRW cosmological models.
Physical Review D
, 110
(8)
, Article 083504. 10.1103/PhysRevD.110.083504.
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Abstract
We study geodesics in Friedmann-Lemaître-Robertson-Walker (FLRW) cosmological models and give the full set of solutions. For azimuthal geodesics, in a closed universe, we give the angular distance traveled by a test particle moving along such a geodesic during one cycle of expansion and recollapse of the universe. We extend previous results regarding the path followed by light rays to the two-fluid case, also including a cosmological constant, as well as to massive test particles. Our work contains various new results and explicit formulas, often using special functions which naturally appear in this setting.
| Type: | Article |
|---|---|
| Title: | Azimuthal geodesics in closed FLRW cosmological models |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.110.083504 |
| Publisher version: | https://doi.org/10.1103/physrevd.110.083504 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, Physics, Particles & Fields, Physics, WORLD-STRUCTURE, KINEMATICS, UNIVERSES |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Mathematics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10214644 |
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