Vortex formation in two dimensions: When symmetry breaks, how big are the pieces?

被引：119

作者：

Yates, A

Zurek, WH

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87455 USA

[2] Univ Geneva, Dept Theoret Phys, CH-1211 Geneva 4, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.80.5477

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the dynamics of second-order phase transitions in two dimensions, breaking a gauged U(1) symmetry. Using numerical simulations, we show that the density of the topological defects formed scales with the quench time scale tau(Q) as n similar to tau(Q)(-1/2) when the dynamics is overdamped at the instant when the freeze-out of thermal fluctuations takes place, and n similar to tau(Q)(-2/3) in the underdamped case. This is predicted by the scenario proposed by one of us (W. H. Z.).

引用

页码：5477 / 5480

页数：4

共 18 条

[1] Laboratory simulation of cosmic string formation in the early Universe using superfluid He-3 [J].