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Uspekhi Fizicheskikh Nauk, 2025, Volume 195, Number 2, Pages 172–187
DOI: https://doi.org/10.3367/UFNr.2024.12.039826 (Mi ufn15976) 		 
This article is cited in 2 scientific papers (total in 3 papers)

70th ANNIVERSARY OF THE BIRTH OF V.A. RUBAKOV. REVIEWS OF TOPICAL PROBLEMS

Nonsingular cosmological scenarios in scalar-tensor theories and their stability

V. E. Volkovaab, S. A. Mironovacd

a Institute for Nuclear Research, Russian Academy of Sciences, Moscow
b Lomonosov Moscow State University, Faculty of Physics
c Institute for Theoretical and Mathematical Physics of Lomonosov Moscow State University
d National Research Centre Kurchatov Institute, Moscow
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DOI: https://doi.org/10.3367/UFNr.2024.12.039826
Abstract: This article gives a concise overview of the development and current status of studies on models of the early Universe without an initial singularity, namely the cosmological bounce and genesis scenarios, constructed within a broad class of scalar-tensor theories, specifically Horndeski theories and their generalizations. The review focuses on topics related to linear stability at the perturbation level against the background of nonsingular cosmological solutions: (1) the no-go theorem, valid for nonsingular cosmologies within the Horndeski theory, (2) updates on possible approaches to evade the no-go theorem, (3) the role of disformal transformations relating the Horndeski subclasses in generalized theories like DHOST, (4) effects on stability caused by additional matter coupling and the potential emergence of superluminal perturbation modes in the multi-component setting.
Keywords: scalar-tensor theories, nonsingular cosmology, stability, superluminality, cosmological bounce, genesis.
Funding agency Grant number
Russian Science Foundation 24-72-10110
Foundation for the Advancement of Theoretical Physics and Mathematics BASIS
The work supported by the Russian Science Foundation, grant no. 24-72-10110, and also by the Theoretical Physics and Mathematics Advancement Foundation BASIS.
Received: September 24, 2024
Revised: December 11, 2024
Accepted: December 24, 2024
English version:
Physics–Uspekhi, 2025, Volume 68, Issue 2, Pages 163–176
DOI: https://doi.org/10.3367/UFNe.2024.12.039826
Bibliographic databases:
Document Type: Article
PACS: 04.20.Dw, 04.50.Kd, 98.80.Bp
MSC: 83F05
Language: Russian
Citation: V. E. Volkova, S. A. Mironov, “Nonsingular cosmological scenarios in scalar-tensor theories and their stability”, UFN, 195:2 (2025), 172–187; Phys. Usp., 68:2 (2025), 163–176
Citation in format AMSBIB
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\by V.~E.~Volkova, S.~A.~Mironov
\paper Nonsingular cosmological scenarios in scalar-tensor theories and their stability
\jour UFN
\yr 2025
\vol 195
\issue 2
\pages 172--187
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\crossref{https://doi.org/10.3367/UFNr.2024.12.039826}
\adsnasa{https://adsabs.harvard.edu/cgi-bin/bib_query?2025PhyU...68..163V}
\transl
\jour Phys. Usp.
\yr 2025
\vol 68
\issue 2
\pages 163--176
\crossref{https://doi.org/10.3367/UFNe.2024.12.039826}
\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-105001199977}
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  • https://www.mathnet.ru/eng/ufn/v195/i2/p172
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