Oscillations and Decay of Superfluid Currents in a One-Dimensional Bose Gas on a Ring

被引：33

作者：

Polo, Juan ^{[1
,2
]}

Dubessy, Romain ^{[3
]}

Pedri, Paolo ^{[3
]}

Perrin, Helene ^{[3
]}

Minguzzi, Anna ^{[1
]}

机构：

[1] Univ Grenoble Alpes, CNRS, LPMMC, F-38000 Grenoble, France

[2] Okinawa Inst Sci & Technol Grad Univ, Quantum Syst Unit, Onna, Okinawa 9040495, Japan

[3] Univ Paris 13, Lab Phys Lasers, CNRS, Sorbonne Paris Cite, 99 Ave JB, F-93430 Villetaneuse, France

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 123卷 / 19期

关键词：

PHASE SLIPS; DYNAMICS; CONDENSATE;

D O I：

10.1103/PhysRevLett.123.195301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the time evolution of a supercurrent imprinted on a one-dimensional ring of interacting bosons in the presence of a defect created by a localized barrier. Depending on interaction strength and temperature, we identify various dynamical regimes where the current oscillates, is self-trapped, or decays with time. We show that the dynamics is captured by a dual Josephson model and involve phase slips of thermal or quantum nature.

引用

页数：6

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