Non-minimal effective scalar–tensor gravity in the early universe.
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| Title: | Non-minimal effective scalar–tensor gravity in the early universe. |
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| Authors: | Zenin, Oleg1 (AUTHOR), Stamov, Roman2 (AUTHOR) stamov_roma@mail.ru, Kuzmin, Sergey1 (AUTHOR), Alexeyev, Stanislav1,3 (AUTHOR) alexeyevso@my.msu.ru |
| Source: | European Physical Journal C -- Particles & Fields. May2026, Vol. 86 Issue 5, p1-10. 10p. |
| Subjects: | Inflationary universe, Hubble constant, Universe, Physical cosmology |
| Abstract: | We study the consistency of several early-Universe scenarios within a framework of non-minimal effective scalar–tensor gravity. We show that bounce, inflation, and genesis stages are supported within the aforementioned theory. Consequently, this framework can serve as a viable model of the early Universe, where accelerated expansion is driven by the theory's own intrinsic degrees of freedom. Notably, the theory also provides two different values of the Hubble parameter, potentially explaining the different values of the Hubble constant measured from galaxy clusters and relic radiation, respectively. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | We study the consistency of several early-Universe scenarios within a framework of non-minimal effective scalar–tensor gravity. We show that bounce, inflation, and genesis stages are supported within the aforementioned theory. Consequently, this framework can serve as a viable model of the early Universe, where accelerated expansion is driven by the theory's own intrinsic degrees of freedom. Notably, the theory also provides two different values of the Hubble parameter, potentially explaining the different values of the Hubble constant measured from galaxy clusters and relic radiation, respectively. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 14346044 |
| DOI: | 10.1140/epjc/s10052-026-15585-4 |
