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arXiv · 1903.07604

What if Newton's Gravitational Constant was negative?

Ismael Ayuso·José P. Mimoso·Nelson J. Nunes
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Abstract

In this work, we seek a cosmological mechanism that may define the sign of the effective gravitational coupling constant, {\em G}. To this end, we consider general scalar-tensor gravity theories as they provide the field theory natural framework for the variation of the gravitational coupling. We find that models with a quadratic potential naturally stabilize the value of {\em G} into the positive branch of the evolution and further, that de Sitter inflation and a relaxation to General Relativity is easily attained.

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Ismael Ayuso, José P. Mimoso, Nelson J. Nunes. 2019-03-18. What if Newton's Gravitational Constant was negative?. https://doi.org/10.3390/galaxies7010038

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