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arXiv 1901.04527cond-mat.stat-mechcond-mat.str-el
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格点二聚体模型中的Hopfions

Hopfions in lattice dimer model

Grigory Bednik

摘要:

本文研究了三维格点二聚体模型的拓扑性质。我们证明了二分格上的二聚体模型具有拓扑缺陷,这些缺陷可以用霍普夫不变量准确地刻画。我们推导了它的显式代数表达式的有效磁场的二聚体配置。从而解决了三维格点二聚体模型中可能态的拓扑分类问题。此外,由于晶格二聚体模型是已知的自旋冰的对偶,我们的工作可以被视为一个建议,以寻找在经典的,以及人工自旋冰和相关材料的hopfions。

英文摘要:

In this paper, we study topological properties of 3D lattice dimer model. We demonstrate, that the dimer model on a bipartite lattice possesses topological defects, which are exactly characterized by Hopf invariant. We derive its explicit algebraic expression in terms of effective magnetic field of a dimer configuration. Thus, we solve the problem of topological classification of possible states in 3D lattice dimer model. Furthermore, since the lattice dimer model is known to be dual to spin ice, our work can be viewed as a proposal to search for hopfions in classical, as well as, artificial spin ice and related materials.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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