Year: 2004
Type: article
Abstract: A search for an annual variation of a daily sidereal modulation of the frequency difference between colocated $^{129}\mathrm{X}\mathrm{e}$ and $^{3}\mathrm{H}\mathrm{e}$ Zeeman masers sets a stringent limit on boost-dependent Lorentz and $CPT$ violation involving the neutron, consistent with no effect at the level of 150 nHz. In the framework of the general standard-model extension, the present result provides the first clean test for the fermion sector of the symmetry of spacetime under boost transformations at a level of ${10}^{\ensuremath{-}27}\text{ }\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$.
Source: Physical Review Letters
Language: Latvian
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2034312622