Feshbach resonances in ultracold<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">Li</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>6</mml:mn><mml:mo>,</mml:mo><mml:mn>7</mml:mn></mml:mrow></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">Na</mml:mi><mml:mprescripts /><mml:none /><mml:mn>23</mml:mn></mml:mmultiscripts></mml:mrow></mml:math>atomic mixtures

Abstract

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

Locations

• Physical Review A - View
• arXiv (Cornell University) - View - PDF
• DataCite API - View