High sensitivity to mass-ratio variation in deep molecular potentials

Abstract

Molecular vibrational transitions are prime candidates for model-independent searches for variation of the proton-to-electron mass ratio. Searches for present-day variation achieve highest sensitivity with deep molecular potentials. We identify several high-sensitivity transitions in the deeply bound ${\mathrm{O}}_2^{+}$ molecular ion. These transitions are electric-dipole forbidden and thus have narrow linewidths. The most sensitive transitions take advantage of an accidental degeneracy between vibrational states in different electronic potentials. We suggest experimentally feasible routes to a measurement with uncertainty exceeding current limits on present-day variation in $m_p/m_e$.

References in corpus (20)

• Cold and Ultracold Molecules: Science, Technology, and Applications
• The fundamental constants and their variation: observational status and theoretical motivations
• Frequency ratio of two optical clock transitions in ${}^{171}$Yb${}^{+}$ and constraints on the time-variation of fundamental constants
• Improved limit on a temporal variation of $m_p/m_e$ from comparisons of Yb${}^{+}$ and Cs atomic clocks
• Precision Test of Mass Ratio Variations with Lattice-Confined Ultracold Molecules
• Can dark matter induce cosmological evolution of the fundamental constants of Nature?
• Enhanced sensitivity to variation of the fine structure constant and m_p/m_e in diatomic molecules
• Stability of the proton-to-electron mass ratio
• Enhanced sensitivity to variation of $m_e/m_p$ in molecular spectra
• Non-destructive state detection for quantum logic spectroscopy of molecular ions
• Dependence of nuclear magnetic moments on quark masses and limits on temporal variation of fundamental constants from atomic clock experiments
• Ultracold molecules: new probes on the variation of fundamental constants
• Constraining changes in the proton-electron mass ratio with inversion and rotational lines
• Robust Constraint on a Drifting Proton-to-Electron Mass Ratio at z=0.89 from Methanol Observation at Three Radio Telescopes
• Perspective: Tipping the scales - search for drifting constants from molecular spectra
• Enhancement of variation of fundamental constants in ultracold atom and molecule systems near Feshbach resonances
• Search for a drifting proton--electron mass ratio from H${}_2$
• Rotational spectrum of molecular ion NH^+ as a probe for alpha- and m_e/m_p-variation
• Effect of alpha variation on a prospective experiment to detect variation of m_e/m_p in diatomic molecules
• Search for variation of fundamental constants: Strong enhancements in $X^2\Pi$ cations of dihalogens and hydrogen halides

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