Topological invariants for superconducting cosmic strings
Topological invariants for superconducting cosmic strings
复制标题
超导宇宙弦的拓扑不变量
DOI:
10.1142/s0217751x18501567
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发表时间:
2017-09
影响因子:
1.6
通讯作者:
Xin Liu
中科院分区:
文献类型:
--
作者:
Xinfei Li;Xin Liu
Superconducting cosmic strings (SCSs) have received revived interests recently. In this paper we treat closed SCSs as oriented knotted line defects, and concentrate on their topology by studying the Hopf topological invariant. This invariant is an Abelian Chern–Simons action, from which the HOMFLYPT knot polynomial can be constructed. It is shown that the two independent parameters of the polynomial correspond to the writhe and twist contributions, separately. This new method is topologically stronger than the traditional (self-)linking number method, which fails to detect essential topology of knots sometimes, shedding new light upon the study of physical intercommunications of superconducting cosmic strings as a complex system.
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DOI:
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期刊:
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
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