Cheng Chin et al 2009 New J. Phys. 11 055048 doi:10.1088/1367-2630/11/5/055048
Ultracold molecules: new probes on the variation of fundamental constants
Focus on Cold and Ultracold MoleculesCheng Chin1,5, V V Flambaum2,3 and M G Kozlov4
Show affiliationsPart of Focus on Cold and Ultracold Molecules
Ultracold molecules offer brand new opportunities to probe the variation of fundamental constants with unprecedented sensitivity. This paper summarizes theoretical background and current constraints on the variation of the fine structure constant and electron-to-proton mass ratio, as well as proposals and experimental efforts to measure the variations based on ultracold molecules. In particular, we describe two novel spectroscopic schemes on ultracold molecules that have greatly enhanced sensitivity to fundamental constants: resonant scattering near Feshbach resonances and spectroscopy on close-lying energy levels of ultracold molecules.
- PACS
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37.10.Mn Slowing and cooling of molecules
33.15.Mt Rotation, vibration, and vibration-rotation constants
- Subjects
- Dates
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Issue 5 (May 2009)
Received 24 January 2009
Published 14 May 2009
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Ultracold molecules: new probes on the variation of fundamental constants
Cheng Chin et al 2009 New J. Phys. 11 055048
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