- Open Access
Conserved quantities in expanding Gödel cosmology
Phys. Rev. D 113, 043502 – Published 5 February, 2026
DOI: https://doi.org/10.1103/bcdm-3nd7
Abstract
At linear order we study perturbations to a Gödel background spacetime which includes expansion in addition to rotation. We investigate the transformation behavior of these perturbations under gauge transformations and construct gauge-invariant quantities. Using the perturbed energy conservation equation we find that there are conserved quantities in expanding Gödel cosmology, in particular a spatial metric trace perturbation, , which is conserved on large scales for pressureless dust. We finally extend our discussion to a perfect fluid matter content to also obtain conserved quantities in this context.
Physics Subject Headings (PhySH)
Article Text
References (23)
- L. Shamir, Mon. Not. R. Astron. Soc. 538, 1 (2025).
- M. Longo, Phys. Lett. B 699, 224 (2011).
- Szigeti, E. Balázs, Szapudi, István, Barna, F. Imre, Barnaföldi, and G. Gergely, Mon. Not. R. Astron. Soc. 538, 4 (2025).
- K. Gödel, Rev. Mod. Phys. 21, 3 (1949).
- E. Hubble, Proc. Natl. Acad. Sci. U.S.A. 15, 168 (1929).
- Y. Obukhov, arXiv:astro-ph/0008106.
- J. M. Bardeen, Phys. Rev. D 22, 1882 (1980).
- H. Kodama and M. Sasaki, Prog. Theor. Phys. Suppl. 78, 1 (1984).
- D. H. Lyth, Phys. Rev. D 31, 1792 (1985).
- A. Friedman, Z. Phys. 10, 377 (1922). [Gen. Relativ. Gravit. 31, 1991 (1999)].
- H. Bondi, Mon. Not. R. Astron. Soc. 107, 410 (1947).
- A. Leithes and K. A. Malik, Classical Quantum Gravity 32, 015010 (2015).
- G. F. R. Ellis and H. van Elst, in Theoretical and Observational Cosmology. NATO Science Series, edited by M. Lachièze-Rey (Springer, Dordrecht, 1999), Vol. 541.
- R. M. Wald, General Relativity (Chicago University Press, Chicago, 1984), p. 491.
- K. Peeters, Comput. Phys. Commun. 176, 550 (2007); Comput. Phys. Commun.arXiv:hep-th/0701238.
- K. A. Malik and D. Wands, Phys. Rep. 475, 1 (2009).
- D. Wands, K. A. Malik, D. H. Lyth, and A. R. Liddle, Phys. Rev. D 62, 043527 (2000).
- K. A. Malik and D. Wands, J. Cosmol. Astropart. Phys. 02 (2005) 007.
- Lukas Bööhme, Dominik J. Schwarz, Prabhakar Tiwari, Morteza Pashapour-Ahmadabadi, Benedict Bahr-Kalus, Maciej Bilicki, Catherine L. Hale, Caroline S. Heneka, and Thilo M. Siewert, Phys. Rev. Lett. 135, 201001 (2025).
- Raelyn M. Sullivan and Douglas Scott, The Sixteenth Marcel Grossmann Meeting (World Scientific, Singapore, 2023), pp. 1532–1541.
- P. Aluri et al., Classical Quantum Gravity 40, 094001 (2023).
- Rohan P. Naidu and Pascal A. Oesch, arXiv:2505.11263.
- W. Wang, S. Cantalupo, A. Pensabene et al., Nat. Astron. 9, 710 (2025).