Sensitivity of the isotopologues of hydronium to variation of the electron-to-proton mass ratio

Details Sensitivity of the isotopologues of hydronium to variation of the electron-to-proton mass ratio Sensitivity of the isotopologues of hydronium to variation of the electron-to-proton mass ratio

2011-03-24

arxiv.org/abs/1103.4739v2

Phys. Rev. A83:052123,2011

Physics

Atomic Physics

6 pages; v2: references corrected

Scientific paper

10.1103/PhysRevA.83.052123

We study the sensitivity of the microwave and submillimeter transitions of the isotopologues of hydronium to the variation of the electron-to-proton mass ratio mu. These sensitivities are enhanced for the low frequency mixed inversion-rotational transitions. The lowest frequency transition (6.6 GHz) takes place for isotopologue H2DO+ and respective sensitivity to mu-variation is close to 200. This is about two orders of magnitude larger than the sensitivity of the inversion transition in ammonia, which is currently used for the search of mu-variation in astrophysics.

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