Cosmological status of Lagrangian theory of density perturbations
Abstract
We show that the hydrodynamical and field approaches in the theory of cosmological scalar perturbations are equivalent for a single medium. We also give relations between the notations introduced by Lukash, Bardeen, Bardeen et al., and Chibisov and Mukhanov.
- Publication:
-
Astronomy Reports
- Pub Date:
- June 2007
- DOI:
- 10.1134/S1063772907060017
- arXiv:
- arXiv:astro-ph/0612397
- Bibcode:
- 2007ARep...51..431S
- Keywords:
-
- 98.80.-k;
- 98.62.Ai;
- Astrophysics
- E-Print:
- 8 pages, no figures, submitted to Astronomy Reports