Subarea law of entanglement in nodal fermionic systems

被引：24

作者：

Ding, Letian ^{[1
]}

Bray-Ali, Noah ^{[1
]}

Yu, Rong ^{[1
,2
]}

Haas, Stephan ^{[1
]}

机构：

[1] Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA

[2] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.100.215701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the subarea-law scaling behavior of the block entropy in bipartite fermionic systems which do not have a finite Fermi surface. It is found that in gapped regimes the leading subarea term is a negative constant, whereas in critical regimes with point nodes the leading subarea law is a logarithmic additive term. At the phase boundary that separates the critical and noncritical regimes, the subarea scaling shows power-law behavior.

引用

页数：4

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