Improved constraints on isotropic shift and anisotropies of the speed of light using rotating cryogenic sapphire oscillators

被引：25

作者：

Hohensee, Michael A. ^{[1
,2
]}

Stanwix, Paul L. ^{[3
,4
]}

Tobar, Michael E. ^{[3
]}

Parker, Stephen R. ^{[3
]}

Phillips, David F. ^{[4
]}

Walsworth, Ronald L. ^{[1
,4
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[3] Univ Western Australia, Sch Phys, Nedlands, WA 6009, Australia

[4] Harvard Smithsonian Ctr Astrophys, Cambridge, MA USA

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 07期

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

D O I：

10.1103/PhysRevD.82.076001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We demonstrate that Michelson-Morley tests, which detect direction-dependent anisotropies in the speed of light, can also be used to place limits upon isotropic deviations of the vacuum speed of light from c, as described by the photon-sector standard model extension parameter (kappa) over tilde (tr). A shift in the speed of light that is isotropic in one inertial frame implies anisotropic shifts in others. Using observer Lorentz covariance, we derive the time-dependent variations in the relative resonance frequencies of a pair of electromagnetic resonators that would be generated by such a shift in the rest frame of the Sun. A new analysis of a recent experimental test of relativity using this result constrains (kappa) over tilde (tr) with a precision of 7.4 x 10(-9). This represents the first constraint on (kappa) over tilde (tr) by a Michelson-Morley experiment and the first analysis of a single experiment to simultaneously set limits on all nine nonbirefringent terms in the photon sector of the minimal standard model extension.

引用

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