Fluctuations and Stochastic Processes in One-Dimensional Many-Body Quantum Systems

被引：36

作者：

Stimming, H. -P. ^{[1
]}

Mauser, N. J. ^{[1
]}

Schmiedmayer, J. ^{[2
]}

Mazets, I. E. ^{[1
,2
,3
]}

机构：

[1] Univ Vienna, Wolfgang Pauli Inst, A-1090 Vienna, Austria

[2] TU Wien, Atominst, A-1020 Vienna, Austria

[3] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 01期

基金：

奥地利科学基金会;

关键词：

GASES; NOISE; INTERFERENCE; FERMIONS;

D O I：

10.1103/PhysRevLett.105.015301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the fluctuation properties of a one-dimensional many-body quantum system composed of interacting bosons and investigate the regimes where quantum noise or, respectively, thermal excitations are dominant. For the latter, we develop a semiclassical description of the fluctuation properties based on the Ornstein-Uhlenbeck stochastic process. As an illustration, we analyze the phase correlation functions and the full statistical distributions of the interference between two one-dimensional systems, either independent or tunnel-coupled, and compare with the Luttinger-liquid theory.

引用

页数：4

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