Spontaneous dissociation of long-range Feshbach molecules

Abstract

We study the spontaneous dissociation of diatomic molecules produced in cold atomic gases via magnetically tunable Feshbach resonances. We provide a universal formula for the lifetime of these molecules that relates their decay to the scattering length and the loss rate constant for inelastic spin relaxation. Our universal treatment as well as our exact coupled channels calculations for ${}^{85}$Rb dimers predict a suppression of the decay over several orders of magnitude when the scattering length is increased. Our predictions are in good agreement with recent measurements of the lifetime of ${}^{85}$Rb${}_2$.

arXiv comment4 pages, 2 figures (final version)

References in corpus (7)

• Creation of ultracold molecules from a Fermi gas of atoms
• Atom--Molecule Coherence in a Bose-Einstein Condensate
• Magnetic Field Dependence of Ultracold Inelastic Collisions near a Feshbach Resonance
• Very high precision bound state spectroscopy near a ${}^{85}$Rb Feshbach resonance
• Adiabatic association of ultracold molecules via magnetic field tunable interactions
• Spontaneous Dissociation of 85Rb Feshbach Molecules
• The nature of Feshbach molecules in Bose-Einstein condensates

Cited by in corpus (41)

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• Production of cold molecules via magnetically tunable Feshbach resonances
• Precise determination of ${}^6$Li cold collision parameters by radio-frequency spectroscopy on weakly bound molecules
• Observation of Heteronuclear Feshbach Molecules from a ${}^{85}$Rb - ${}^{87}$Rb gas
• Production Efficiency of Ultracold Feshbach Molecules in Bosonic and Fermionic Systems
• Ultracold Molecule Production Via a Resonant Oscillating Magnetic Field
• Molecule formation in ultracold atomic gases
• Feshbach resonances in ultracold atomic and molecular collisions: threshold behaviour and suppression of poles in scattering lengths
• Molecular collisions in ultracold atomic gases
• Spectroscopy of Ultracold, Trapped Cesium Feshbach Molecules
• Two-body and Three-body Contacts for Identical Bosons near Unitarity
• Excited Thomas-Efimov levels in ultracold gases
• Observation of Efimov molecules created from a resonantly interacting Bose gas
• Feshbach resonances in the 6Li-40K Fermi-Fermi mixture: Elastic versus inelastic interactions
• Collisions between tunable halo dimers: exploring an elementary four-body process with identical bosons
• Spontaneous Dissociation of 85Rb Feshbach Molecules
• Quantum limited measurements of atomic scattering properties
• Optical Feshbach resonances: Field-dressed theory and comparison with experiments
• Feshbach resonances in ultracold 85Rb
• Production of three-body Efimov molecules in an optical lattice
• Association of molecules using a resonantly modulated magnetic field
• First-principles quantum simulations of dissociation of molecular condensates: Atom correlations in momentum space
• Observation of Efimov Universality across a Non-Universal Feshbach Resonance in \textsuperscript{39}K
• Rabi Oscillations between Atomic and Molecular Condensates Driven with Coherent One-Color Photoassociation
• Cross-Molecular Coupling in Combined Photoassociation and Feshbach Resonances
• Interaction induced decay of a heteronuclear two-atom system
• Non-Hermitian BCS-BEC evolution with a complex scattering length
• Lifetime of Feshbach dimers in a Fermi-Fermi mixture of ${}^6$Li and ${}^{40}$K
• Pairing mean-field theory for the dynamics of dissociation of molecular Bose-Einstein condensates
• Universal Relation for the Inelastic Two-Body Loss Rate
• Role of spatial inhomogeneity in dissociation of trapped molecular condensates
• Ramsey interferometry with atoms and molecules: two-body versus many-body phenomena
• Characterizing quasibound states and scattering resonances
• Collisional cooling of ultra-cold atom ensembles using Feshbach resonances
• Formation of molecules from a Cs Bose-Einstein condensate
• Phase protection of Fano-Feshbach resonances
• Atom-atom correlations and relative number squeezing in dissociation of spatially inhomogeneous molecular condensates
• Feshbach-resonant Raman photoassociation in a Bose-Einstein condensate
• Interferometry of Efimov states in thermal gases by modulated magnetic fields
• Theory of Combined Photoassociation and Feshbach Resonances in a Bose-Einstein Condensate
• Lellouch-Lüscher relation for ultracold few-atom systems under confinement