Quantum Ripples Over a Semiclassical Shock

被引：49

作者：

Bettelheim, Eldad ^{[1
]}

Glazman, Leonid ^{[2
]}

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[2] Yale Univ, Dept Phys, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 26期

基金：

美国国家科学基金会; 以色列科学基金会;

关键词：

INTERACTING BOSE-GAS;

D O I：

10.1103/PhysRevLett.109.260602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The evolution of an initially smooth spatial inhomogeneity in the density of a one-dimensional Fermi gas is well described by classical mechanics. The classical evolution leads to the formation of a shock wave: the density develops kinks in its coordinate dependence. We show that quantum corrections to the shock wave produce density ripples which run off the kinks. Despite their quantum origin, the amplitude and period of the ripples are expressed only in terms of classical objects derived from a smooth density profile. DOI: 10.1103/PhysRevLett.109.260602

引用

页数：5

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