Employing confinement induced resonances to realize Kondo physics with ultracold atoms

International Conference on Strongly Correlated Electron Systems 2014

Bauer, J.^1 ; Demler, E.^1 ; Salomon, C.^2

Department of Physics, Harvard University, Cambridge

MA

02138, United States^1

Laboratoire Kastler Brossel, CNRS, Ecole Normale Superieure, 24 rue Lhomond, Paris

75231, France^2

关键词: Anderson impurity model;    Confinement-induced resonances;    Kondo physics;    Numerical renormalization groups;    Radio-frequency response;    Spectral function;    Ultracold atomic gas;    Ultracold atoms;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012151/pdf
DOI  :  10.1088/1742-6596/592/1/012151

来源: IOP

【 摘 要 】

We recently proposed a novel realization of Kondo physics with ultracold atomic gases and illustrated that a mixture of40K and23Na atoms has suitable properties for the generation of a Kondo-correlated state with experimentally accessible scales. This system fortuitously satisfies rather special conditions. Here we discuss an alternative realization based on confinement induced resonances which could also be applicable for other mixtures. We first explain the general principle of how to engineer the Kondo correlated state like this. Then we present results for local spectral functions from numerical renormalization group (NRG) calculations for the appropriate effective Anderson impurity model and also predict the experimentally measurable radio frequency response.