Testing periodic local position invariance using long-term comparison of the SYRTE atomic fountains and H-masers

M. E. Tobar, P. L. Stanwix, J. J. McFerran, J. Guena, M. Abgrall, S. Bize, A. Clairon, Ph Laurent, P. Rosenbusch, D. Rovera, G. Santarelli

Research output: Chapter in Book/Conference paperConference paper

1 Citation (Scopus)

Abstract

The frequencies of Cs and Rb fountain clocks have been compared to various H-masers to search for periodic changes correlated with the gravitational potential and boost with respect to the cosmic microwave background. The data span about eight years and the main sources of long-term noise are the offsets and linear drifts associated with the H-masers. To circumvent these effects we apply a numerical derivative to the data, which significantly reduces the standard error. We determine a limit for the Local Position Invariance (LPI) coefficient with respect to gravity to be 4.8×10−6 and 10−5 for a Cs-H and Rb- H comparison, respectively. From the same data the boost LPI coefficients were measured to parts in 1011. From these results and others, independent limits on all coefficients of the boost violation vector with respect to fundamental constant invariance were determined to parts in 1010.

Original languageEnglish
Title of host publicationProceedings of the 6th Meeting on CPT and Lorentz Symmetry, CPT 2013
EditorsV. Alan Kostelecky
Place of PublicationUSA
PublisherWorld Scientific Publishing
Pages37-40
Number of pages4
ISBN (Electronic)9789814566445
ISBN (Print)9789814566421
DOIs
Publication statusPublished - 2014
Event6th Meeting on CPT and Lorentz Symmetry, CPT 2013 - Bloomington, United States
Duration: 17 Jun 201321 Jun 2013

Publication series

NameProceedings of the 6th Meeting on CPT and Lorentz Symmetry, CPT 2013

Conference

Conference6th Meeting on CPT and Lorentz Symmetry, CPT 2013
CountryUnited States
CityBloomington
Period17/06/1321/06/13

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