Stability and Dynamics of Atom-Molecule Superfluids Near a Narrow Feshbach Resonance
arXiv:2310.01639 · doi:10.1103/PhysRevA.110.013306
Abstract
The recent observations of a stable molecular condensate emerging from a condensate of bosonic atoms and related "super-chemical" dynamics have raised an intriguing set of questions. Here we provide a microscopic understanding of this unexpected stability and dynamics in atom-molecule superfluids; we show one essential element behind these phenomena is an extremely narrow Feshbach resonance in Cs at 19.849G. Comparing theory and experiment we demonstrate how this narrow resonance enables the dynamical creation of a large closed-channel molecular fraction superfluid, appearing in the vicinity of unitarity. Theoretically the observed superchemistry (\textit{i.e.}, Bose enhanced reactions of atoms and molecules), is found to be assisted by the formation of Cooper-like pairs of bosonic atoms that have opposite momenta. Importantly, this narrow resonance opens the possibility to explore the quantum critical point of a molecular Bose superfluid and related phenomena which would not be possible near a more typically broad Feshbach resonance.
arXiv comment14 pages, 8 figures; close to the published version
References in corpus (48)
- Feshbach Resonances in Ultracold Gases
- Cold and Ultracold Molecules: Science, Technology, and Applications
- Production of cold molecules via magnetically tunable Feshbach resonances
- Time-dependent variational principle for quantum lattices
- Atom--Molecule Coherence in a Bose-Einstein Condensate
- Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
- Resonance superfluidity in a quantum degenerate Fermi gas
- Excitation of phonons in a Bose-Einstein condensate by light scattering
- Superchemistry: dynamics of coupled atomic and molecular Bose-Einstein condensates
- A Fermi Degenerate Gas of Polar Molecules
- Observation of molecules produced from a Bose-Einstein condensate
- Extreme tunability of interactions in a Li Bose-Einstein condensate
- Formation of Quantum-Degenerate Sodium Molecules
- Universal dynamics of a degenerate unitary Bose gas
- Three-body recombination in Bose gases with large scattering length
- Feshbach resonances in ultracold K(39)
- Resonance Superfluidity: Renormalization of Resonance Scattering Theory
- Universal Prethermal Dynamics of Bose Gases Quenched to Unitarity
- Ramsey fringes in a Bose-Einstein condensate between atoms and molecules
- Quantum phase transition in an atomic Bose gas with a Feshbach resonance
- Formation of Pairing Fields in Resonantly Coupled Atomic and Molecular Bose-Einstein Condensates
- Quantum effects on the dynamics of a two-mode atom-molecule Bose-Einstein condensate
- Superfluid transitions in bosonic atom-molecule mixtures near Feshbach resonance
- Variational Study of Fermionic and Bosonic Systems with Non-Gaussian States: Theory and Applications
- Collective emission of matter-wave jets from driven Bose-Einstein condensates
- Quantum state manipulation and cooling of ultracold molecules
- Determination of atomic scattering lengths from measurements of molecular binding energies near Feshbach resonances
- Microscopic Dynamics in a Strongly Interacting Bose-Einstein Condensate
- Microscopic theory of atom-molecule oscillations in a Bose-Einstein condensate
- Ultracold Dipolar Molecules Composed of Strongly Magnetic Atoms
- Quenching to unitarity: Quantum dynamics in a 3D Bose gas
- Atomic Bose-Einstein condensate to molecular Bose-Einstein condensate transition
- Universal Scaling Laws in the Dynamics of a Homogeneous Unitary Bose Gas
- Efficient creation of molecules from a cesium Bose-Einstein condensate
- Finite Temperature Collapse of a Bose Gas with Attractive Interactions
- Dynamics of correlations in a dilute Bose gas following an interaction quench
- Bound-state signatures in quenched Bose-Einstein condensates
- Alternative Route to Strong Interaction: Narrow Feshbach Resonance
- Observation of pairs of atoms at opposite momenta in an equilibrium interacting Bose gas
- Many-body Chemical Reactions in a Quantum Degenerate Gas
- Nonequilibrium States of a Quenched Bose Gas
- Post-quench dynamics and pre-thermalization in a resonant Bose gas
- Prethermalization to thermalization crossover in a dilute Bose gas following an interaction ramp
- Quench Dynamics in Bose condensates in the Presence of a Bath: Theory and Experiment
- A strongly interacting Bose gas: Nozières and Schmitt-Rink theory and beyond
- Pairing Instability and Mechanical Collapse of a Bose Gas with an Attractive Interaction
- Early-time dynamics of Bose gases quenched into the strongly interacting regime
- Ultracold Chemistry and its Reaction Kinetics
Cited by in corpus (5)
- Universal coherent atom-molecule oscillations in the dynamics of the unitary Bose gas near a narrow Feshbach resonance
- Two-Body Contact Dynamics in a Bose Gas near a Fano-Feshbach Resonance
- Tunable Molecular Interactions Near an Atomic Feshbach Resonance: Stability and Collapse of a Molecular Bose-Einstein Condensate
- Quantum Triticality of Bosonic Atomic-Molecular Mixtures with Feshbach Coupling
- First-order phase transition in atom-molecule quantum degenerate mixtures with coherent three-body recombination