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arXiv 1601.07902cond-mat.str-elcond-mat.mes-hallquant-ph
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Luttinger定理的拓扑扩充

Topological Enrichment of Luttinger's Theorem

Parsa Bonderson, Meng Cheng, Kaushal Patel, Eugeniu Plamadeala

摘要:

我们建立了一个推广的Luttinger定理,适用于分数费米液体,即费米液体共存的对称性丰富的拓扑秩序。我们发现,在费米体积与费米子密度之间的线性关系中,密度的贡献是由拓扑有序扇区的填充分数所决定的,而填充分数的大小取决于对称性如何分解.相反,这对允许的对称性丰富的拓扑序施加了限制,这些拓扑序可以在具有给定费米体积和费米子密度的分馏费米液体中表现出来。

英文摘要:

We establish a generalization of Luttinger's theorem that applies to fractionalized Fermi liquids, i.e. Fermi liquids coexisting with symmetry enriched topological order. We find that, in the linear relation between the Fermi volume and the density of fermions, the contribution of the density is changed by the filling fraction associated with the topologically ordered sector, which is determined by how the symmetries fractionalize. Conversely, this places constraints on the allowed symmetry enriched topological orders that can manifest in a fractionalized Fermi liquid with a given Fermi volume and density of fermions.

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