Sensitivity of microwave spectra of deuterated ammonia to variation of electron-to-proton mass ratio

Abstract

We estimate sensitivity coefficients Q_μto variation of the electron-to-proton mass ratio μfor microwave transitions in partly deuterated ammonia NH2D and ND2H. Because of the mixing between rotational and inversion degrees of freedom the coefficients Q_μstrongly depend on the quantum numbers of the transition. This can be used for astrophysical search for possible variation of the constant μ.

7 pages, submitted to J. Phys. B, Special Issue on High Precision Atomic Physics; v2: corrected misprints in Tab. 2&3

References in corpus (6)

• Strong Limit on a Variable Proton-to-Electron Mass Ratio from Molecules in the Distant Universe
• Enhanced sensitivity to time-variation of m_p/m_e in the inversion spectrum of ammonia
• The density, the cosmic microwave background, and the proton-to-electron mass ratio in a cloud at redshift 0.9
• Detecting Chameleons: The Astronomical Polarization Produced by Chameleon-like Scalar Fields
• $\Lambda$-doublet spectra of diatomic radicals and their dependence on fundamental constants
• A new approach for testing variations of fundamental constants over cosmic epochs using FIR fine-structure lines

Cited by in corpus (10)

• Methanol as a tracer of fundamental constants
• Perspective: Tipping the scales - search for drifting constants from molecular spectra
• Searching for chameleon-like scalar fields with the ammonia method. II. Mapping of cold molecular cores in NH3 and HC3N lines
• Microwave and submillimeter molecular transitions and their dependence on fundamental constants
• Rotational spectrum of molecular ion NH^+ as a probe for alpha- and m_e/m_p-variation
• Accurate Prediction of the Ammonia Probes of a Variable Proton-to-Electron Mass Ratio
• Sensitivity of the isotopologues of hydronium to variation of the electron-to-proton mass ratio
• Diatomic rovibronic transitions as potential probes for proton-to-electron mass ratio across cosmological time
• Sensitivity of microwave transition in H2O2 to variation of the electron-to-proton mass ratio
• Sensitivity of Tunneling-Rotational Transitions in Ethylene Glycol to Variation of Electron-to-Proton Mass Ratio