非阿贝尔超导体的约瑟夫森结和非阿贝尔约瑟夫森涡旋
Josephson junction of non-Abelian superconductors and non-Abelian Josephson vortices
摘要：
约瑟夫森结是由两个超导体包裹一个绝缘体构成的，约瑟夫森涡旋是被吸收到约瑟夫森结中的磁涡旋（通量管），其动力学可以用sine-Gordon方程描述。在场论框架下，提出了一种柔性约瑟夫森结，其中约瑟夫森结由分隔两个凝聚的畴壁表示，约瑟夫森涡旋是畴壁有效理论中的sine-Gordon孤子.本文提出了一种用非阿贝尔畴壁描述的非阿贝尔色超导体的约瑟夫森结，并证明了在畴壁有效理论中，被吸收的非阿贝尔涡旋（色磁通量管）是一个用非阿贝尔sine-Gordon孤子表示的非阿贝尔约瑟夫森涡旋，即$U(N)$主手征模型.
英文摘要：
A Josephson junction is made of two superconductors sandwiching an insulator, and a Josephson vortex is a magnetic vortex (flux tube) absorbed into the Josephson junction, whose dynamics can be described by the sine-Gordon equation. In a field theory framework, a flexible Josephson junction was proposed, in which the Josephson junction is represented by a domain wall separating two condensations and a Josephson vortex is a sine-Gordon soliton in the domain wall effective theory. In this paper, we propose a Josephson junction of non-Abelian color superconductors, that is described by a non-Abelian domain wall, and show that a non-Abelian vortex (color magnetic flux tube) absorbed into it is a non-Abelian Josephson vortex represented as a non-Abelian sine-Gordon soliton in the domain wall effective theory, that is the $U(N)$ principal chiral model.
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