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Motivated by the prospect of observing Efimov and Bose polaron physics in ultracold mixtures of bosonic atoms with large mass imbalance, this work investigates the magnetic Feshbach resonances between $^{7}\text{Li}$ and $^{133}\text{Cs}$.…

量子气体 · 物理学 2020-01-16 Pascal Naidon

A low energy effective theory based on a microscopic multi-channel description of the atom-atom interaction is derived for the scattering of alkali atoms in different hyperfine states. This theory describes all scattering properties,…

其他凝聚态物理 · 物理学 2007-05-23 G. M. Bruun , A. D. Jackson , E. E. Kolomeitsev

In the vicinity of a narrow Feshbach resonances Efimov features are expected to be characterized by the resonance's properties rather than the van der Waals length of the interatomic potential. Although this theoretical prediction is…

量子气体 · 物理学 2022-05-16 Ang Li , Yaakov Yudkin , Paul S. Julienne , Lev Khaykovich

We consider the magnetically tunable Feshbach resonances that may exist in ultracold mixtures of molecules in $^2\Sigma$ states and alkali-metal atoms. We focus on Rb+CaF as a prototype system. There are likely to be Feshbach resonances…

原子物理 · 物理学 2023-06-05 Robert C. Bird , Michael R. Tarbutt , Jeremy M. Hutson

A Fermi-Fermi mixture of 40K and 6Li does not exhibit the Efimov effect in a free space, but the Efimov effect can be induced by confining only 40K in one dimension. Here the Efimov's three-body parameter is controlled by the confinement…

其他凝聚态物理 · 物理学 2009-06-02 Yusuke Nishida , Shina Tan

Inspired by the renewed experimental activities on $p$-wave resonantly interacting atomic Fermi gases, we theoretically investigate some experimental observables of such systems at zero temperature in two dimensions, using both mean-field…

量子气体 · 物理学 2019-08-21 Hui Hu , Xia-Ji Liu

A model of strongly interacting and correlated hadrons is developed. The interaction used contains a long range attraction and short range repulsive hard core. Using this interaction and various limiting situations of it, a study of the…

核理论 · 物理学 2014-11-20 Aram Z. Mekjian

We study the propagation of an atom laser beam through a spatial region with a magnetic field tuned to a Feshbach resonance. Tuning the magnetic field below the resonance produces an effective focusing Kerr medium that causes a modulational…

介观与纳米尺度物理 · 物理学 2009-11-07 Weiping Zhang , Chris P. Search , Han Pu , Pierre Meystre , Ewan M. Wright

Inspired by the narrow Feshbach resonance in systems with the two-body interaction, we propose the two-channel model of three-component fermions with the three-body interaction that takes into account the finite-range effects in low…

量子气体 · 物理学 2024-01-23 V. Polkanov , V. Pastukhov

Orbital degrees of freedom play an essential role in metals, semiconductors, and strongly confined electronic systems. Experiments with ultracold atoms have used highly anisotropic confinement to explore low-dimensional physics, but…

In this letter we show that the recently theoretically predicted and experimentally observed "orbital Feshbach resonance" in alkali-earth-like Yb-173 atom is a narrow resonance in energy, while it is hundreds Gauss wide in term of magnetic…

量子气体 · 物理学 2016-09-14 Junjun Xu , Ren Zhang , Yanting Cheng , Peng Zhang , Ran Qi , Hui Zhai

We study atom-atom scattering in quasi-one-dimensional geometries with transverse anisotropy. By assuming an s-wave pseudo-potential of contact interaction, we show that the system would exhibit a single confinement-induced resonance, where…

量子气体 · 物理学 2011-12-05 Wei Zhang , Peng Zhang

We report on the experimental observation of a strongly interacting gas of ultracold two-electron fermions with orbital degree of freedom and magnetically tunable interactions. This realization has been enabled by the demonstration of a…

量子气体 · 物理学 2015-12-30 G. Pagano , M. Mancini , G. Cappellini , L. Livi , C. Sias , J. Catani , M. Inguscio , L. Fallani

A finite temperature model of strongly correlated nucleons with underlying isospin symmetries is developed. The model can be used to study the role of bound states and Feshbach resonances on the thermal properties of a spin 1/2, isospin 1/2…

核理论 · 物理学 2009-10-14 A. Z. Mekjian

We realize and study a strongly interacting two-component atomic Fermi gas confined to two dimensions in an optical lattice. Using radio-frequency spectroscopy we measure the interaction energy of the strongly interacting gas. We observe…

In a recent paper entitled "High temperature expansion applied to fermions near Feshbach resonance" (Phys. Rev. Lett. 92, 160404 (2004)), Ho and Muller have demonstrated a remarkable similarity between its high and low temperature…

统计力学 · 物理学 2007-05-23 Rajat K. Bhaduri , M. K. Srivastava

We present measurements of the binding energies of $^6$Li p-wave Feshbach molecules formed in combinations of the (F = 1/2, m_F = +1/2), (1), and (F = 1/2, m_F = -1/2), (2), states. The binding energies scale linearly with magnetic field…

其他凝聚态物理 · 物理学 2009-11-13 J. Fuchs , C. Ticknor , P. Dyke , G. Veeravalli , E. Kuhnle , W. Rowlands , P. Hannaford , C. J. Vale

We report the first creation of a bulk sample of ultracold heteronuclear p-wave Feshbach molecules in an optically trapped Bose-Bose mixture of 23Na and 87Rb atoms. Using loss spectroscopy and binding energy measurements, we systematically…

原子物理 · 物理学 2026-05-13 Fan Jia , Zhichao Guo , Zerong Huang , Dajun Wang

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…

The ultracold mixture of \Na and \Rb atoms has become an important system for investigating physics in Bose-Bose atomic mixtures and for forming ultracold ground-state polar molecules. In this work, we provide an improved characterization…

量子气体 · 物理学 2022-02-23 Zhichao Guo , Fan Jia , Bing Zhu , Lintao Li , Jeremy M. Hutson , Dajun Wang