Critical dynamics of gauge systems: spontaneous vortex formation in 2D superconductors.
Critical dynamics of gauge systems: spontaneous vortex formation in 2D superconductors.
复制标题
规范系统的临界动力学：二维超导体中自发涡旋的形成。
DOI：
10.1103/physrevlett.88.137004
复制
发表时间：
2001
影响因子：
8.6
通讯作者：
W. H. Zurek
中科院分区：
文献类型：
--
作者：
Greg J. Stephens;L. Bettencourt;W. H. Zurek
我们研究了阿贝尔-希格斯系统高温初态非平衡弛豫过程中涡旋的形成。我们平衡的标量场和规范场规范不变的朗之万方程和放松系统瞬时消除热波动。对于临界附近的耦合，kappa（c）=平方根[lambda]/e = 1，我们观察到形成的大集群的符号相同的磁涡旋。它们的出现对相变的动力学、拓扑缺陷的分布和后期相序动力学有影响。我们提供的解释所观察到的涡密度和涡的配置。
We examine the formation of vortices during the nonequilibrium relaxation of a high-temperature initial state of an Abelian-Higgs system. We equilibrate the scalar and gauge fields using gauge-invariant Langevin equations and relax the system by instantaneously removing thermal fluctuations. For couplings near critical, kappa(c) = square root[lambda]/e = 1, we observe the formation of large clusters of like-sign magnetic vortices. Their appearance has implications for the dynamics of the phase transition, for the distribution of topological defects, and for late-time phase ordering kinetics. We offer explanations for both the observed vortex densities and vortex configurations.