Dark matter, time-varyingG, and a dilaton field
- 8 January 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 64 (2) , 123-126
- https://doi.org/10.1103/physrevlett.64.123
Abstract
We demonstrate the observational viability of having an exactly massless dilaton field couple with gravitational strength to most matter in the Universe. This is done by constructing a generalized Jordan-Brans-Dicke model in which the scalar couples with different strengths to visible and to conjectured ‘‘dark’’ matter. In this model, improved Ġ measurements may provide nontrivial bounds on the coupling constants of the dilaton to matter.Keywords
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