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New Test of Local Lorentz Invariance Using a Ne-21-Rb-K Comagnetometer

Author(s): Smiciklas, M; Brown, JM; Cheuk, LW; Smullin, SJ; Romalis, Michael V

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Abstract: We develop a new comagnetometer using Ne-21 atoms with nuclear spin I = 3/2 and Rb atoms polarized by spin exchange with K atoms to search for tensor interactions that violate local Lorentz invariance. We frequently reverse the orientation of the experiment and search for signals at the first and second harmonics of the sidereal frequency. We constrain 4 of the 5 spatial Lorentz-violating coefficients c(jk)(n) that parametrize anisotropy of the maximum attainable velocity of a neutron at a level of 10(-29), improving previous limits by 2 to 4 orders of magnitude and placing the most stringent constraint on deviations from local Lorentz invariance.
Publication Date: 21-Oct-2011
Electronic Publication Date: 21-Oct-2011
Citation: Smiciklas, M, Brown, JM, Cheuk, LW, Smullin, SJ, Romalis, MV. (2011). New Test of Local Lorentz Invariance Using a Ne-21-Rb-K Comagnetometer. PHYSICAL REVIEW LETTERS, 107 (10.1103/PhysRevLett.107.171604
DOI: doi:10.1103/PhysRevLett.107.171604
ISSN: 0031-9007
EISSN: 1079-7114
Type of Material: Journal Article
Journal/Proceeding Title: PHYSICAL REVIEW LETTERS
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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