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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2025 Volume 121, Issue 6, Pages 421–430 (Mi jetpl7464)

This article is cited in 3 papers

ASTROPHYSICS, SPACE PHYSICS, COSMOLOGY, GRAVITATION

Cascade relaxation of the gravitating vacuum as a generator of the evolving universe

V. N. Lukash, E. V. Mikheeva

Astro Space Center, Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 117997 Russia

Abstract: The cascade relaxation of a polarized vacuum in the expanding Universe is a chain of evolutionary epochs of decreasing its density with the exit of dominant fields (each in its own time) from the initial zero states to nonzero values, from the dominant scalar field in the early Universe to subsequent ones, including the $\Lambda$-term in the modern Universe. The cascade vacuum relaxation creates the entire observable cosmology from the Friedmann model with small perturbations of the metric with non-power-law power spectra from which primordial black holes could have arisen, and gravitational waves over a wide wavenumber range to the formation of dark matter and energy, early galaxies, supermassive black holes, and the large-scale structure of the Universe. An observational model of cascade vacuum relaxation in the early Universe has been constructed, which contains two constants determined by observational data and does not require information on the potential of the fields. A solution has been obtained for the general relativity vacuum attractor, including, in addition to the two previously mentioned constants, the third constant (not yet limited by observations), which leads to an additional power of density perturbations on a small scale ($k>10$ Mpc$^{-1}$) in the form of a “bump”, a two-power spectrum, etc.

Received: 18.11.2024
Revised: 13.01.2025
Accepted: 04.02.2025

DOI: 10.31857/S0370274X25030137


 English version:
Journal of Experimental and Theoretical Physics Letters, 2025, 121:6, 399–410


© Steklov Math. Inst. of RAS, 2026