Finite-temperature dynamics of a bosonic Josephson junction

被引：13

作者：

Bidasyuk, Y. M. ^{[1
]}

Weyrauch, M. ^{[1
]}

Momme, M. ^{[1
]}

Prikhodko, O. O. ^{[2
]}

机构：

[1] Phys Tech Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany

[2] Taras Shevchenko Natl Univ Kyiv, Dept Phys, Volodymyrska Str 64-13, UA-01601 Kiev, Ukraine

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2018年 / 51卷 / 20期

关键词：

Josephson effect; Bose-Einstein condensation; non-equilibrium dynamics; stochastic equations; BOSE-EINSTEIN CONDENSATION;

D O I：

10.1088/1361-6455/aae022

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In the framework of the stochastic projected Gross-Pitaevskii equation we investigate finite-temperature dynamics of a bosonic Josephson junction (BJJ) formed by a Bose-Einstein condensate of atoms in a two-well trapping potential. We extract the characteristic properties of the BJJ from the stationary finite-temperature solutions and compare the dynamics of the system with the resistively shunted Josephson model. Analyzing the decay dynamics of the relative population imbalance we estimate the effective normal conductance of the junction induced by thermal atoms. The calculated normal conductance at various temperatures is then compared with predictions of the noise-less model and the model of ballistic transport of thermal atoms.

引用

页数：9

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