Eotvos bounds on couplings of fundamental parameters to gravity

Details Eotvos bounds on couplings of fundamental parameters to gravity Eotvos bounds on couplings of fundamental parameters to gravity

2008-05-02

arxiv.org/abs/0805.0318v2

Phys.Rev.Lett.101:041102,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

To be published (Phys.Rev.Lett.), minor changes and corrections, equivalent to journal version

Scientific paper

10.1103/PhysRevLett.101.041102

The possible dependence of fundamental couplings and mass ratios on the gravitational potential has been bounded by comparing atomic clock frequencies over Earth's elliptical orbit. Here we evaluate bounds on such dependence from E"otv"os-type experiments that test the Weak Equivalence Principle, including previously neglected contributions from nuclear binding energy. We find that variations of fundamental parameters correlated with the gravitational potential are bounded at 10^-8--10^-9, an improvement of 2--3 orders of magnitude over atomic clock bounds.

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