摘要
本文利用有序介质缺陷的同伦论系统地研究超流He系统的拓扑结构.对于~4He和~3He的A,B相的拓扑结构,给出更严格、更简洁的讨论.尤其是,以代数拓扑理论为工具,本文预言超流~3He系统的四种新相:C,D,E和F相,给出其拓扑结构的示性数,以及C,D相出现的大致物理条件.
The topological structure of the superfluid He system has been studied using the homotopy theory for defects in ordered media developed in the 80s. Topological structures of the 4He and A, B phases of 3He have been treated in a more strict and accurate way than those discussed in available literature. It is predicted that there are four possible new phases, C, D, E and F for the 3He system by employing the theory of algebraic topology. Approximate physical conditions for the appearance of C and D phases and the characteristic numbers of topological structure of the four new phases are given.
出处
《华中理工大学学报》
CSCD
北大核心
1991年第4期43-47,共5页
Journal of Huazhong University of Science and Technology
关键词
超流He系统
拓扑结构
同伦群
Homotopy group
Symmetry group
Order parameter space
. Isotropic group
Topological theory of defects
Superfluid He
