Roton creation and vortex nucleation in superfluids

被引：21

作者：

Berloff, NG ^{[1
]}

Roberts, PH ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Math, Los Angeles, CA 90095 USA

来源：

PHYSICS LETTERS A | 2000年 / 274卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0375-9601(00)00516-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The nonlocal nonlinear Schrodinger equation is used to analyze the superfluid flow around an impurity. The differences between the processes of vortex nucleation and roton creation are elucidated. It is argued that vortices are nucleated when the velocity around the ion exceeds the velocity of sound. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：69 / 74

页数：6

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