Feshbach resonances, weakly bound molecular states and coupled-channel potentials for cesium at high magnetic fields

Abstract

We explore the scattering properties of ultracold ground-state Cs atoms at magnetic fields between 450 G (45 mT) and 1000 G. We identify 17 new Feshbach resonances, including two very broad ones near 549 G and 787 G. We measure the binding energies of several different dimer states by magnetic field modulation spectroscopy. We use least-squares fitting to these experimental results, together with previous measurements at lower field, to determine a new 6-parameter model of the long-range interaction potential, designated M2012. Coupled-channels calculations using M2012 provide an accurate mapping between the s-wave scattering length and the magnetic field over the entire range of fields considered. This mapping is crucial for experiments that rely on precise tuning of the scattering length, such as those on Efimov physics.

arXiv comment19 pages, 18 figures

References in corpus (34)

• Feshbach Resonances in Ultracold Gases
• Evidence for Efimov quantum states in an ultracold gas of cesium atoms
• Quantum Gas of Deeply Bound Ground State Molecules
• Collisional stability of a three-component degenerate Fermi gas
• Quantum gas of rovibronic ground-state molecules in an optical lattice
• Universality in Three- and Four-Body Bound States of Ultracold Atoms
• Three-body recombination in a three-state Fermi gas with widely tunable interactions
• Three-body recombination of ultra-cold atoms to a weakly bound $s$ level
• Three-body recombination at large scattering lengths in an ultracold atomic gas
• Contact Measurements on Atomic BEC
• Control of Interaction-Induced Dephasing of Bloch Oscillations
• Observation of universality in ultracold 7Li three-body recombination
• Universality of the Three-Body Parameter for Efimov States in Ultracold Cesium
• Origin of the Three-body Parameter Universality in Efimov Physics
• Towards the production of ultracold ground-state RbCs molecules: Feshbach resonances, weakly bound states, and coupled-channel model
• Efimov Resonances in Ultracold Quantum Gases
• Ultracold Molecule Production Via a Resonant Oscillating Magnetic Field
• Nuclear-spin-independent short-range three-body physics in ultracold atoms
• Feshbach resonances in ultracold atomic and molecular collisions: threshold behaviour and suppression of poles in scattering lengths
• Sensitive Detection of Cold Cesium Molecules by Radiative Feshbach Spectroscopy
• Limits on Universality in Ultracold Three-Boson Recombination
• Determination of atomic scattering lengths from measurements of molecular binding energies near Feshbach resonances
• Efimov physics beyond universality
• Observation of interspecies Li-Cs Feshbach resonances
• Optimized production of a cesium Bose-Einstein condensate
• Control of dipolar relaxation in external fields
• Association of ultracold double-species bosonic molecules
• Ultracold mixtures of atomic Li-6 and Cs-133 with tunable interactions
• Ultracold atom-molecule collisions and bound states in magnetic fields: tuning zero-energy Feshbach resonances in He-NH (3Sigma-)
• Spectroscopy of Ultracold, Trapped Cesium Feshbach Molecules
• Avoided crossings between bound states of ultracold Cesium dimers
• Making Cold Molecules by Time-dependent Feshbach Resonances
• Metastable Feshbach Molecules in High Rotational States
• Collisional and molecular spectroscopy in an ultracold Bose-Bose mixture

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