Runaway dilaton and equivalence principle violations

Details Runaway dilaton and equivalence principle violations Runaway dilaton and equivalence principle violations

2002-04-30

arxiv.org/abs/gr-qc/0204094v2

Phys.Rev.Lett. 89 (2002) 081601

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, minor changes

Scientific paper

10.1103/PhysRevLett.89.081601

In a recently proposed scenario, where the dilaton decouples while cosmologically attracted towards infinite bare string coupling, its residual interactions can be related to the amplitude of density fluctuations generated during inflation, and are large enough to be detectable through a modest improvement on present tests of free-fall universality. Provided it has significant couplings to either dark matter or dark energy, a runaway dilaton can also induce time-variations of the natural "constants" within the reach of near-future experiments.

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