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Cosmological status of Lagrangian theory of density perturbations

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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.

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Authors and Affiliations

  1. Lebedev Astro Space Centre of Physics Institute of Russian Academy of Sciences, ul. Profsoyuznaya 84/32, 117997, Moscow, Russia

    V. N. Strokov

  2. Department of General and Applied Physics, Moscow Institute of Physics and Technology, Institutskiĭ per. 9, 141701 Dolgoprudnyĭ, Russia

    V. N. Strokov

Authors
  1. V. N. Strokov
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Additional information

Published in Russian in Astronomicheskiĭ Zhurnal, 2007, Vol. 84, No. 6, pp. 483–486.

The text was submitted by the author in English.

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Strokov, V.N. Cosmological status of Lagrangian theory of density perturbations. Astron. Rep. 51, 431–434 (2007). https://doi.org/10.1134/S1063772907060017

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  • DOI: https://doi.org/10.1134/S1063772907060017

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