What if Newton’s Gravitational Constant Was Negative?
Keyword(s):
In this work, we seek a cosmological mechanism that may define the sign of the effective gravitational coupling constant, 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 G into the positive branch of the evolution and further, that de Sitter inflation and a relaxation to General Relativity is easily attained.
1995 ◽
Vol 347
(3-4)
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pp. 211-216
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2011 ◽
Vol 26
(17)
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pp. 1301-1308
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1998 ◽
Vol 13
(16)
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pp. 2739-2745
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1995 ◽
Vol 10
(21)
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pp. 1507-1519
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Keyword(s):
1995 ◽
Vol 10
(19)
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pp. 1351-1363
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2021 ◽