Repulsive gravity induced by a conformally coupled scalar field implies a bouncing radiation-dominated universe
Sign Up to like & getrecommendations! Published in 2017 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-017-2219-6
Abstract: In the present work we revisit a model consisting of a scalar field with a quartic self-interaction potential non-minimally (conformally) coupled to gravity (Novello in Phys Lett 90A:347 1980). When the scalar field vacuum is… read more here.
Keywords: field; conformally coupled; repulsive gravity; scalar field ... See more keywords
Can conformally coupled modified gravity solve the Hubble tension?
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DOI: 10.1103/physrevd.103.023530
Abstract: The discrepancy between early-Universe inferences and direct measurements of the Hubble constant, known as the Hubble tension, recently became a pressing subject in high precision cosmology. As a result, a large variety of theoretical models… read more here.
Keywords: coupled modified; model; ccmg model; tension ... See more keywords
Conformally coupled scalar in Lovelock theory
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DOI: 10.1103/physrevd.107.084050
Abstract: In arbitrary higher dimension, we consider the combination of Lovelock gravity alongside a scalar-tensor action built out of higher order operators and Euler densities. The latter action is constructed in such a way as to… read more here.
Keywords: theory; lovelock; scalar field; stealth ... See more keywords