Enhanced effect of temporal variation of the fine structure constant in diatomic molecules

Abstract

We show that the relative effect of variation of the fine structure constant in microwave transitions between very close and narrow rotational-hyperfine levels may be enhanced 2-3 orders of magnitude in diatomic molecules like LaS, LaO, LuS, YbF, etc. The enhancement is a result of cancellation between the hyperfine and rotational intervals.

Cited by in corpus (12)

• Environmental Dependence of Masses and Coupling Constants
• Enhanced sensitivity to variation of the fine structure constant and m_p/m_e in diatomic molecules
• Dependence of nuclear binding on hadronic mass variation
• Enhanced effect of quark mass variation in 229Th and limits from Oklo data
• On Th229 and time-dependent fundamental constants
• Variation of fundamental constants: theory and observations
• Sensitivity of Nuclear Transition Frequencies to Temporal Variation of the Fine Structure Constant or the Strong Interaction
• Varying Alpha: New Constraints from Seasonal Variations
• Variation of fundamental constants in space and time: theory and observations
• Splitting Sensitivity of the Ground and 7.6 eV Isomeric States of 229Th
• Coulomb energy contribution to the excitation energy in ${}^{229}$Th and enhanced effect of $\alpha$ variation
• Current quark mass dependence of nucleon magnetic moments and radii