Improved test of Lorentz Invariance in Electrodynamics using Rotating Cryogenic Sapphire Oscillators

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dc.creatorStanwix, Paul L.
dc.creatorTobar, Michael E.
dc.creatorWolf, Peter
dc.creatorLocke, Clayton R.
dc.creatorIvanov, Eugene N.
dc.date2006-09-19
dc.date2006-10-03
dc.date.accessioned2026-07-07T10:41:01Z
dc.date.available2026-07-07T10:41:01Z
dc.descriptionWe present new results from our test of Lorentz invariance, which compares two orthogonal cryogenic sapphire microwave oscillators rotating in the lab. We have now acquired over 1 year of data, allowing us to avoid the short data set approximation (less than 1 year) that assumes no cancelation occurs between the $\tildeκ_{e-}$ and $\tildeκ_{o+}$ parameters from the photon sector of the standard model extension. Thus, we are able to place independent limits on all eight $\tildeκ_{e-}$ and $\tildeκ_{o+}$ parameters. Our results represents up to a factor of 10 improvement over previous non rotating measurements (which independently constrained 7 parameters), and is a slight improvement (except for $\tildeκ_{e-}^{ZZ}$) over results from previous rotating experiments that assumed the short data set approximation. Also, an analysis in the Robertson-Mansouri-Sexl framework allows us to place a new limit on the isotropy parameter $P_{MM}=δ-β+{1/2}$ of $9.4(8.1)\times10^{-11}$, an improvement of a factor of 2.
dc.descriptionAccepted for publication in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/gr-qc/0609072
dc.identifierhttp://arxiv.org/abs/gr-qc/0609072
dc.identifierPhys.Rev.D74:081101,2006
dc.identifierdoi:10.1103/PhysRevD.74.081101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/181503
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectInstrumentation and Detectors
dc.titleImproved test of Lorentz Invariance in Electrodynamics using Rotating Cryogenic Sapphire Oscillators
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