VORTEX RINGS AND FINITE-WAVE-NUMBER SUPERFLUIDITY NEAR THE HE-4 LAMBDA-TRANSITION

被引：38

作者：

WILLIAMS, GA

机构：

[1] Physics Department, University of California, Los Angeles

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.68.2054

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The superfluid response to a perturbation of wave number k is calculated using a vortex-ring theory of the He-4 lambda-transition. Rings of diameter greater than k-1 cannot follow the perturbation, and this leads to a finite-size broadening of the superfluid density near T(lambda). The vortex theory provides a new perspective on the Feynman-Onsager proposal that rotons are vortex rings of smallest size.

引用

页码：2054 / 2057

页数：4

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