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arXiv 1406.6522cond-mat.str-elhep-ph
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局域四费米子相互作用模型下Weyl半金属能隙的产生

Gap generation in Weyl semimetals in a model with local four-fermion interaction

P. O. Sukhachov

摘要:

在局域四费米子相互作用模型下研究了Weyl半金属中的能隙产生。研究表明,存在一个分离对称相和对称破缺相的耦合常数临界值,并给出了相应的相图。研究了更一般的具有小裸隙的Weyl材料的能隙产生,并确定了准粒子能谱。据发现,在这种情况下,动态产生的间隙导致额外的准粒子能带分裂。

英文摘要:

We study the gap generation in Weyl semimetals in a model with local four-fermion interaction. It is shown that there exists a critical value of coupling constant separating the symmetric and broken symmetry phases, and the corresponding phase diagram is described. The gap generation in a more general class of Weyl materials with small bare gap is studied, and the quasiparticle energy spectrum is determined. It is found that, in this case, the dynamically generated gap leads to additional splitting of the quasiparticle energy bands.

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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