DYNAMICS OF 2-DIMENSIONAL VORTEX PAIRS IN A SPATIALLY VARYING POTENTIAL

被引：1

作者：

LEE, HH ^{[1
]}

GUNN, JMF ^{[1
]}

机构：

[1] UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.46.8336

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider the dynamics of vortices in a superfluid He-4 film flowing over a substrate at zero temperature. The vortex trajectories are assumed to be governed by the Magnus-force equation with the effect of the substrate incorporated via the gradient of a potential. We use an equivalent Hamiltonian formulation to show that two vortices in a slowly varying potential can exhibit stochastic behavior. In this regard, there are differences between the cases of two vortices of the same sign and those of the opposite sign, the latter becoming stochastic more readily.

引用

页码：8336 / 8343

页数：8