Cold Atom Clocks, Precision Oscillators and Fundamental Tests

A. Clairon; A.N. Luiten; C. Mandache; C. Salomon; C. Vian; F. Pereira Dos Santos; G. Santarelli; H. Marion; I. Maksimovic; J. Gruenert

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Cold Atom Clocks, Precision Oscillators and Fundamental Tests

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arxiv astro-ph/0310112 v1 pith:NKWRFN6F submitted 2003-10-04 astro-ph

Cold Atom Clocks, Precision Oscillators and Fundamental Tests

S. Bize , P. Wolf , M. Abgrall , L. Cacciapuoti , A. Clairon , J. Gruenert , Ph. Laurent , P. Lemonde

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I. Maksimovic C. Mandache H. Marion F. Pereira Dos Santos P. Rosenbusch G. Santarelli Y. Sortais C. Vian S. Zhang C. Salomon A.N. Luiten M.E. Tobar

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We describe two experimental tests of the Equivalence Principle that are based on frequency measurements between precision oscillators and/or highly accurate atomic frequency standards. Based on comparisons between the hyperfine frequencies of 87Rb and 133Cs in atomic fountains, the first experiment constrains the stability of fundamental constants. The second experiment is based on a comparison between a cryogenic sapphire oscillator and a hydrogen maser. It tests Local Lorentz Invariance. In both cases, we report recent results which improve significantly over previous experiments.

Cold Atom Clocks, Precision Oscillators and Fundamental Tests

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