Collapse dynamics of a ${}^{176}\text{Yb}$-${}^{174}\text{Yb}$ Bose-Einstein condensate

Abstract

In this paper, we present a theoretical study of a two-component Bose-Einstein condensate composed of Ytterbium (Yb) isotopes in a three dimensional anisotropic harmonic potential. The condensate consists of a mixture of ${}^{176}\text{Yb}$ atoms which have a negative s-wave scattering length and ${}^{174}\text{Yb}$ atoms having a positive s-wave scattering length. We study the ground state as well as dynamic properties of this two-component condensate. Due to the attractive interactions between ${}^{176}\text{Yb}$ atoms, the condensate of ${}^{176}\text{Yb}$ undergo a collapse when the particle number exceed a critical value. The critical number and the collapse dynamics are modified due to the presence of ${}^{174}\text{Yb}$ atoms. We use coupled two-component Gross-Pitaevskii equations to study the collapse dynamics. The theoretical results obtained are in reasonable agreement with the experimental results of Fukuhara {\em et al.} [PRA{\bf 79}, 021601(R) (2009)].

6 pages, 5 figures

References in corpus (3)

• Two-color photoassociation spectroscopy of ytterbium atoms and the precise determinations of s-wave scattering lengths
• All-Optical Formation of Quantum Degenerate Mixtures
• Modulation instability and solitary wave formation in two-component Bose-Einstein condensates

Cited by in corpus (2)

• C programs for solving the time-dependent Gross-Pitaevskii equation in a fully anisotropic trap
• Position swapping and pinching in Bose-Fermi mixtures with two-color optical Feshbach resonances