Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/88456
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Type: Journal article
Title: Oscillating test of the isotropic shift of the speed of light
Author: Baynes, F.
Tobar, M.
Luiten, A.
Citation: Physical Review Letters, 2012; 108(26):260801-1-260801-5
Publisher: American Physical Society
Issue Date: 2012
ISSN: 0031-9007
1079-7114
Statement of
Responsibility: 
Fred N. Baynes, Michael E. Tobar and Andre N. Luiten
Abstract: In this Letter, we present an improved constraint on possible isotropic variations of the speed of light. Within the framework of the standard model extension, we provide a limit on the isotropic, scalar parameter κ̃(tr) of 3±11×10({-10), an improvement by a factor of 6 over previous constraints. This was primarily achieved by modulating the orientation of the experimental apparatus with respect to the velocity of Earth. This orientation modulation shifts the signal for Lorentz invariance to higher frequencies, and we have taken advantage of the higher stability of the resonator at shorter time scales, together with better rejection of systematic effects, to provide a new constraint.
Rights: © 2012 American Physical Society
RMID: 0030008448
DOI: 10.1103/PhysRevLett.108.260801
Appears in Collections:Chemistry and Physics publications

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