Stability of the proton-to-electron mass ratio

Abstract

We report a limit on the fractional temporal variation of the proton-to-electron mass ratio as, obtained by comparing the frequency of a rovibrational transition in SF6 with the fundamental hyperfine transition in Cs. The SF6 transition was accessed using a CO2 laser to interrogate spatial 2-photon Ramsey fringes. The atomic transition was accessed using a primary standard controlled with a Cs fountain. This result is direct and model-free.

References in corpus (13)

• The fundamental constants and their variation: observational status and theoretical motivations
• Further Evidence for Cosmological Evolution of the Fine Structure Constant
• New Limits to the Drift of Fundamental Constants from Laboratory Measurements
• The Oklo bound on the time variation of the fine-structure constant revisited
• A Search for Variations of Fundamental Constants using Atomic Fountain Clocks
• New limit on the present temporal variation of the fine structure constant
• Dependence of nuclear magnetic moments on quark masses and limits on temporal variation of fundamental constants from atomic clock experiments
• Long-distance frequency dissemination with a resolution of 10-17
• Enhanced sensitivity to time-variation of m_p/m_e in the inversion spectrum of ammonia
• Absolute frequency measurement of an SF6 two-photon line using a femtosecond optical comb and sum-frequency generation
• Fundamental Physical Constants: Looking from Different Angles
• Possible variations of the fine structure constant $\alpha$ and their metrological significance
• Laboratory Limits on Temporal Variations of Fundamental Constants: An Update

Cited by in corpus (98)

• Search for New Physics with Atoms and Molecules
• Mid-infrared frequency combs
• Cold and Ultracold Molecules: Science, Technology, and Applications
• Varying constants, Gravitation and Cosmology
• Sisyphus Laser Cooling of a Polyatomic Molecule
• Ultracold molecules for measuring the electron's electric dipole moment
• Quantum cascade laser frequency stabilisation at the sub-Hz level
• The status of varying constants: a review of the physics, searches and implications
• Progress toward a first observation of parity violation in chiral molecules by high-resolution laser spectroscopy
• Cascaded multiplexed optical link on a telecommunication network for frequency dissemination
• The UVES Large Program for Testing Fundamental Physics II: Constraints on a Change in μ Towards Quasar HE 0027-1836
• Keck telescope constraint on cosmological variation of the proton-to-electron mass ratio
• Precise study of asymptotic physics with subradiant ultracold molecules
• Laser cooling of molecules
• A search for varying fundamental constants using Hz-level frequency measurements of cold CH molecules
• Perspective: Tipping the scales - search for drifting constants from molecular spectra
• The Constancy of the Constants of Nature: Updates
• Probing weak force induced parity violation by high resolution mid-infrared molecular spectroscopy
• An intense, cold, velocity-controlled molecular beam by frequency-chirped laser slowing
• QCL-based frequency metrology from the mid-infrared to the THz range: a review
• Rotational spectroscopy of cold, trapped molecular ions in the Lamb-Dicke regime
• Enhanced Sensitivity to Ultralight Bosonic Dark Matter in the Spectra of the Linear Radical SrOH
• High-precision methanol spectroscopy with a widely tunable SI-traceable frequency-comb-based mid-infrared QCL
• H2+ and HD+: candidates for a molecular clock
• A buffer gas beam source for short, intense and slow molecular pulses
• An Observational Determination of the Proton to Electron Mass Ratio in the Early Universe
• Searching for chameleon-like scalar fields with the ammonia method
• Measurement of the variation of electron-to-proton mass ratio using ultracold molecules produced from laser-cooled atoms
• Search for a drifting proton--electron mass ratio from H${}_2$
• Molecular near-infrared transitions determined with sub-kHz accuracy
• A molecular fountain
• Quantum control of molecules for fundamental physics
• Prospects for application of ultracold Sr${}_2$ molecules in precision measurements
• Microwave and submillimeter molecular transitions and their dependence on fundamental constants
• $\Lambda$-doublet spectra of diatomic radicals and their dependence on fundamental constants
• A widely tunable 10-$\mu$m quantum cascade laser phase-locked to a state-of-the-art mid-infrared reference for precision molecular spectroscopy
• Mid-infrared laser phase-locking to a remote near-infrared frequency reference for high precision molecular spectroscopy
• A terahertz vibrational molecular clock with systematic uncertainty at the $10^{-14}$ level
• Quantum logic for control and manipulation of molecular ions using a frequency comb
• High-precision spectroscopy of ultracold molecules in an optical lattice
• Photoassociative creation of ultracold heteronuclear 6Li40K* molecules
• Nonadiabatic Effects in Ultracold Molecules via Anomalous Linear and Quadratic Zeeman Shifts
• Generalized Hyper-Ramsey Resonance with separated oscillating fields
• Two-photon spectroscopy of trapped HD${}^{+}$ ions in the Lamb-Dicke regime
• High sensitivity to mass-ratio variation in deep molecular potentials
• Limits on a Gravitational Field Dependence of the Proton--Electron Mass Ratio from H${}_2$ in White Dwarf Stars
• Gyromagnetic Factors and Atomic Clock Constraints on the Variation of Fundamental Constants
• Rotational spectrum of molecular ion NH^+ as a probe for alpha- and m_e/m_p-variation
• Towards detection of the molecular parity violation in chiral Ru(acac)${}_3$ and Os(acac)${}_3$
• Analog FM free-space optical communication based on a mid-infrared quantum cascade laser frequency comb
• Optical lattice clocks with weakly bound molecules
• High resolution spectroscopy of methyltrioxorhenium: towards the observation of parity violation in chiral molecules
• High-resolution mid-infrared spectroscopy of buffer-gas-cooled methyltrioxorhenium molecules
• Sub-kHz linewidth narrowing of a mid-infrared OPO idler frequency by direct cavity stabilization
• Preparation of an ultra-cold sample of ammonia molecules for precision measurements
• Probing unification scenarios with atomic clocks
• Vibronic branching ratios for nearly-closed rapid photon cycling of SrOH
• Ultracold ${}^{88}{\mathrm{Sr}}_2$ molecules in the absolute ground state
• Two-photon vibrational transitions in ${\mathrm{O}}_2^{+}$ as probes of variation of the proton-to-electron mass ratio
• Deceleration and trapping of ammonia molecules in a traveling wave decelerator
• Effect of alpha variation on the vibrational spectrum of Sr_2
• Rotational State Analysis of AlH+ by Two-Photon Dissociation
• Cosmological Evolution of Fundamental Constants: From Theory to Experiment
• Infrared dynamic polarizability of HD+ rovibrational states
• Search for variation of fundamental constants: Strong enhancements in $X^2\Pi$ cations of dihalogens and hydrogen halides
• Effect of alpha variation on a prospective experiment to detect variation of m_e/m_p in diatomic molecules
• Statistical sensitivity of phase measurements via laser-induced fluorescence with optical cycling detection
• Enhanced effects of temporal variation of the fundamental constants in ^{2}Π_{1/2} term diatomic molecules: ^{207}Pb^{19}F
• Prospects for Polar Molecular Ion Optical Probe of Varying Proton-Electron Mass Ratio
• Optical Pumping of TeH+: Implications for the Search for Varying mp/me
• Laser spectroscopy of aromatic molecules with optical cycling centers: strontium (I) phenoxides
• Consistency of local and astrophysical tests of the stability of fundamental constants
• Do the fundamental constants change with time ?
• Photoassociation of ultracold molecules near a Feshbach resonance as a probe of the electron-proton mass ratio variation
• High-resolution 'magic'-field spectroscopy on trapped polyatomic molecules
• Near-to mid-IR spectral purity transfer with a tunable frequency comb: methanol frequency metrology over a record frequency span
• Diatomic rovibronic transitions as potential probes for proton-to-electron mass ratio across cosmological time
• Laser spectroscopy of cold molecules
• Prospects for high-resolution microwave spectroscopy of methanol in a Stark-deflected molecular beam
• Ramsey-type microwave spectroscopy on CO ($a^3\Pi$)
• Cosmic Acceleration from Varying Masses in Five Dimensions
• Hundred-Femtosecond-Level Concise Optical Time Delay Measurement System Based on Linear Optical Sampling
• Variation of fundamental constants and white dwarfs
• Trapping molecules on chips
• Laser cooled 137BaF molecules for measuring nuclear-spin-dependent parity violation
• Studying fundamental physics using quantum enabled technologies with trapped molecular ions
• Accurate determination of the Boltzmann constant by Doppler spectroscopy: Towards a new definition of the kelvin
• Sensitivity of Tunneling-Rotational Transitions in Ethylene Glycol to Variation of Electron-to-Proton Mass Ratio
• Quantum Sensing Using Atomic Clocks for Nuclear and Particle Physics
• Magnetic hyperfine structure constants of ${}^{137}$BaF in the ${}^2{\Pi }_{1/2}$ and ${}^2{\Pi }_{3/2}$ excited states
• High-resolution spectroscopy of barium monofluoride: Odd isotopologues, hyperfine structure and isotope shifts
• Search for Variations of Fundamental Constants
• Varying fundamental constants cosmography
• Optically Derived Radio-Frequency Benchmark in Methanol: A Sub-kHz Reference for Astrophysical Tests of Fundamental Physics
• Parity violation effects in helical osmocene: theoretical analysis and experimental prospects
• High-resolution spectroscopy on cold electrically trapped formaldehyde
• Chiral Pt(Me-BPCH): Synthesis and theoretical investigation of parity violation sensitivity
• Unveiling the Dynamics of Optical Frequency Combs from Phase-Amplitude Correlations