Dipolar droplet bound in a trapped Bose-Einstein condensate

作者：Young S Luis E; Adhikari S K

来源：Physical Review A, 2013, 87(1): 013618.

DOI：10.1103/PhysRevA.87.013618

We study the statics and dynamics of a dipolar Bose-Einstein condensate (BEC) droplet bound by interspecies contact interaction in a trapped nondipolar BEC. Our findings are demonstrated in terms of stability plots of a dipolar Dy-164 droplet bound in a trapped nondipolar Rb-87 BEC with a variable number of Dy-164 atoms and interspecies scattering length. A trapped nondipolar BEC of a fixed number of atoms can bind only a dipolar droplet containing fewer atoms than a critical number for the interspecies scattering length between two critical values. The shape and size (statics) as well as the small breathing oscillation (dynamics) of the dipolar BEC droplet are studied using numerical and variational solutions of a mean-field model. We also suggest an experimental procedure for achieving such a Dy-164 droplet by relaxing the trap on the Dy-164 BEC in a trapped binary Rb-87-Dy-164 mixture. DOI: 10.1103/PhysRevA.87.013618

• 出版日期2013-1-17