Atom-Dimer Scattering in a Three-Component Fermi Gas

Abstract

Ultracold gases of three distinguishable particles with large scattering lengths are expected to show rich few-body physics related to the Efimov effect. We have created three different mixtures of ultracold 6Li atoms and weakly bound 6Li2 dimers consisting of atoms in three different hyperfine states and studied their inelastic decay via atom-dimer collisions. We have found resonant enhancement of the decay due to the crossing of Efimov-like trimer states with the atom-dimer continuum in one mixture as well as minima of the decay in another mixture, which we interpret as a suppression of exchange reactions of the type |12>+|3> -> |23>+|1>. Such a suppression is caused by interference between different decay paths and demonstrates the possiblity to use Efimov physics to control the rate constants for molecular exchange reactions in the ultracold regime.

5 pages, 3 figures

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• Collisional stability of a three-component degenerate Fermi gas
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• Precise determination of ${}^6$Li cold collision parameters by radio-frequency spectroscopy on weakly bound molecules
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• Observation of an Efimov-like resonance in ultracold atom-dimer scattering
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• Evidence for Ground- and Excited-State Efimov Trimers in a Three-State Fermi Gas
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• Limits on Universality in Ultracold Three-Boson Recombination
• A Universal Trimer in a Three-Component Fermi Gas
• Magnetically Controlled Exchange Process in an Ultracold Atom-Dimer Mixture
• Three-body Recombination of Lithium-6 Atoms with Large Negative Scattering Lengths
• Ultracold three-body collisions near overlapping Feshbach resonances
• Thermal equilibrium and efficient evaporation of an ultracold atom-molecule mixture
• A possible Efimov trimer state in a 3-component lithium-6 mixture
• Efimov Physics in 6Li Atoms
• Three-body loss in lithium from functional renormalization
• Ultracold atom-molecule collisions with fermionic atoms

Cited by in corpus (73)

• Efimov Physics: a review
• Universal few-body physics and cluster formation
• Universality of the Three-Body Parameter for Efimov States in Ultracold Cesium
• Origin of the Three-body Parameter Universality in Efimov Physics
• Radio Frequency Association of Efimov Trimers
• Observation of the Second Triatomic Resonance in Efimov's Scenario
• Efimov Resonances in Ultracold Quantum Gases
• Universality of the three-body Efimov parameter at narrow Feshbach resonances
• Tests of universal three-body physics in an ultracold Bose-Fermi mixture
• Measurement of an Efimov trimer binding energy in a three-component mixture of 6Li
• Universal three-body parameter in heteronuclear atomic systems
• Microscopic Origin and Universality Classes of the Efimov Three-Body Parameter
• Few-body physics in resonantly interacting ultracold quantum gases
• Physical Origin of the Universal Three-body Parameter in Atomic Efimov Physics
• Visualizing Efimov Correlations in the Bose Polaron
• Association of Efimov trimers from a three-atom continuum
• Alpha particle clusters and their condensation in nuclear systems
• Ultracold atoms and the Functional Renormalization Group
• Study of Efimov physics in two nuclear-spin sublevels of 7Li
• Observation of Efimov molecules created from a resonantly interacting Bose gas
• Polaronic atom-trimer continuity in three-component Fermi gases
• Controlled state-to-state atom-exchange reaction in an ultracold atom-dimer mixture
• Universal three-body physics in ultracold KRb mixtures
• Quantum mixtures of ultracold gases of neutral atoms
• Resonant Five-body Recombination in an Ultracold Gas of Bosonic Atoms
• Universality and the three-body parameter of helium-4 trimers
• The ^4He trimer as an Efimov system
• New type of crossover physics in three-component Fermi gases
• The Efimov effect in lithium 6
• Universal three-body recombination via resonant d-wave interactions
• Universal three-body recombination and Efimov resonances in an ultracold Li-Cs mixture
• Efimov-van-der-Waals universality for ultracold atoms with positive scattering lengths
• Resonant atom-dimer collisions in cesium: Testing universality at positive scattering lengths
• Calibration of Interaction Energy between Bose and Fermi Superfluids
• Observation of dipolar splittings in high-resolution atom-loss spectroscopy of ${}^6$Li $p$-wave Feshbach resonances
• Efimov physics from a renormalization group perspective
• Looking for "avalanche-mechanism" loss at an atom-molecule Efimov resonance
• Enhancing the Efimov correlation in Bose polarons with large mass imbalance
• Three-body recombination of two-component cold atomic gases into deep dimers in an optical model
• Weakly bound states of two- and three-boson systems in the crossover from two to three dimension
• Finite-range effects in Efimov physics beyond the separable approximation
• Atom-Dimer Scattering and Stability of Bose and Fermi Mixtures
• Universal Dimer in a Collisionally Opaque Medium: Experimental Observables and Efimov Resonances
• Revealing the origin of super-Efimov states in the hyperspherical formalism
• Inelastic collisions of ultracold triplet Rb${}_{\text{2}}$ molecules in the rovibrational ground state
• Three-body correlations in a two-dimensional SU(3) Fermi gas
• Universal few-body physics in a harmonic trap
• Analytical thermodynamics of a strongly attractive three-component Fermi gas in one dimension
• Color superfluidity of neutral ultra-cold fermions in the presence of color-flip and color-orbit fields
• Efimov Trimers in a Harmonic Potential
• Three-body crossover from a Cooper triple to bound trimer state in three-component Fermi gases near a triatomic resonance
• Three-body Physics in Strongly Correlated Spinor Condensates
• Three-body recombination at finite energy within an optical model
• QCD-like phase diagram with Efimov trimers and Cooper pairs in resonantly interacting SU(3) Fermi gases
• Three in Many: Efimov physics in the presence of a Fermi sea
• Van der Waals universality in homonuclear atom-dimer elastic collisions
• Phase Diagrams of Three-Component Attractive Ultracold Fermions in One-Dimension
• Variational approach for interacting ultra-cold atoms in arbitrary one-dimensional confinement
• Observation of Anomalous Decay of a Polarized Three-Component Fermi Gas
• Efimov physics from the functional renormalization group
• Stable Heteronuclear Few-Atom Bound States in Mixed Dimensions
• State-to-state endothermic and nearly thermoneutral reactions in an ultracold atom-dimer mixture
• Universal three-body bound states in mixed dimensions beyond the Efimov paradigm
• Cold atom-dimer reaction rates with ${}^4$He, ${}^{6,7}$Li and ${}^{23}$Na
• Coexistence of pairing gaps in three-component Fermi gases
• The universality of the Efimov three-body parameter
• Efimov physics in the complex plane
• A Multi-Purpose Platform for Analog Quantum Simulation
• Long-lived trimers in a quasi-two-dimensional Fermi system
• Efimov states in Li-Cs mixtures within a minimal model
• Mechanisms of anomalous three-body loss in a population-imbalanced three-component Fermi gas
• Shallow Trimers of Two Identical Fermions and One Particle in Resonant Regimes
• Observable Resonances in Efimov-unfavored Systems