Feshbach resonances in ultracold ^{6,7}Li + ^{23}Na atomic mixtures

Abstract

We report a theoretical study of Feshbach resonances in ${}^6$Li + ${}^{23}$Na and ${}^7$Li + ${}^{23}$Na mixtures at ultracold temperatures using new accurate interaction potentials in a full quantum coupled-channel calculation. Feshbach resonances for $l=0$ in the initial collisional open channel ${}^6$Li$(f=1/2,m_f=1/2){+}^{23}$Na$(f=1,m_f=1)$ are found to agree with previous measurements, leading to precise values of the singlet and triplet scattering lengths for the ${}^{6,7}$Li${+}^{23}$Na pairs. We also predict additional Feshbach resonances within experimentally attainable magnetic fields for other collision channels.

4 pages, 3 figures

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• Phase separation and collapse in Bose-Fermi mixtures with a Feshbach resonance
• Quantum phase transition in Bose-Fermi mixtures
• Efficient formation of ground state ultracold molecules via STIRAP from the continuum at a Feshbach resonance
• Supersolidity of cold-atom Bose-Fermi mixtures in optical lattices
• Bound states of a localized magnetic impurity in a superfluid of paired ultracold fermions
• Broad Feshbach resonances in ultracold alkali-metal systems
• Collisional and molecular spectroscopy in an ultracold Bose-Bose mixture
• Anomalous Dimers in Quantum Mixtures near Broad Resonances: Pauli Blocking, Fermi Surface Dynamics and Implications
• Fermi-Bose Mixtures Near Broad Interspecies Feshbach Resonances
• Photoassociation of ultracold molecules near a Feshbach resonance as a probe of the electron-proton mass ratio variation
• Ground states of a mixture of two species of spin-1 Bose gases with interspecies spin exchange in a magnetic field
• Charge transfer in ultracold gases via Feshbach resonances
• Integral representation for scattering phase shifts via the phase-amplitude approach
• Phase-amplitude formalism for ultra-narrow shape resonances
• Number and spin densities in the ground state of a trapped mixture of two pseudospin-1/2 Bose gases with interspecies spin-exchange interaction
• Creating a Quantum Degenerate Gas of Stable Molecules via Weak Photoassociation