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Self-bound droplets of a dilute gas
2017-04-26  【 】【打印】【关闭

Institute of Theoretical Physics

Chinese Academy of Sciences

 Key Laboratory of Theoretical Physics

Seminar

Title

题目

Self-bound droplets of a dilute gas

Speaker

报告人

Prof. Blair Blakie

Affiliation

所在单位

University of Otago, New Zealand

Date

日期

4:00pm, Wednesday, Apr. 26, 2017

Venue

地点

Room 6420 ITP New Building

Abstract

摘要

Recent experiments with Bose-Einstein condensates of dysprosium and erbium atoms have observed the formation of droplets that can preserve their form, even in the absence of any external confinement [1]. These droplets occur in the regime where the long-ranged dipole-dipole interaction between the atoms dominates over short-ranged contact interaction. In this regime meanfield theory predicts that the condensate is unstable to collapse. However, as the collapse begins, and the density increases, the quantum fluctuation corrections become important and stabilize the system as a finite sized droplet. I will discuss our recent theoretical work predicting the existent of self-bound droplets [2] and their excitations [3].
[1] M. Schmitt, M. Wenzel, F. Böttcher, I. Ferrier-Barbut, and T. Pfau, Nature 539, 259 (2016).
[2] D. Baillie, R. M. Wilson, R. N. Bisset, and P. B. Blakie, Phys. Rev. A 94, 021602(R) (2016).
[3] D. Baillie, R. M. Wilson, P. B. Blakie, arXiv:1703.07927

Contact person

所内联系人

Su Yi
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