Asymptotic Freedom Cosmology
S. Capozziello, R. de Ritis, A.A. Marino

TL;DR
This paper explores how certain scalar-tensor gravity theories can exhibit asymptotic freedom at cosmic times approaching infinity, leading to vanishing effective gravity and potential solutions to issues in inflationary and string cosmology.
Contribution
It demonstrates a mechanism for asymptotic freedom in scalar-tensor theories, enabling cosmological models to approach de Sitter or power-law behaviors at late times.
Findings
Effective gravitational coupling approaches zero as time goes to infinity
Cosmological solutions can asymptotically resemble de Sitter or power-law expansion
Potential to address shortcomings in inflationary and string-dilaton cosmology
Abstract
For a general class of scalar--tensor gravity theories, we discuss how to recover asymptotic freedom regimes when cosmic time . Such a feature means that the effective gravitational coupling , while cosmological solutions can asymptotically assume de Sitter or power--law behaviours. In our opinion, through this mechanism, it is possible to cure some shortcomings in inflationary and in string--dilaton cosmology.
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