Deciphering the nonlocal entanglement entropy of fracton topological orders
Deciphering the nonlocal entanglement entropy of fracton topological orders
复制标题
破译分形拓扑序的非局部纠缠熵
DOI:
10.1103/physrevb.97.144106
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发表时间:
2018
影响因子:
3.7
通讯作者:
Lu, Yuan-Ming
中科院分区:
文献类型:
--
作者:
Shi, Bowen;Lu, Yuan-Ming
The ground states of topological orders condense extended objects and support topological excitations. This nontrivial property leads to nonzero topological entanglement entropyfor conventional topological orders. Fracton topological order is an exotic class of models which is beyond the description of TQFT. With some assumptions about the condensates and the topological excitations, we derive a lower bound of the nonlocal entanglement entropy(a generalization of). The lower bound applies to Abelian stabilizer models including conventional topological orders as well as type-I and type-II fracton models, and it could be used to distinguish them. For fracton models, the lower bound shows thatcould obtain geometry-dependent values, andis extensive for certain choices of subsystems, including some choices which always give zero for TQFT. The stability of the lower bound under local perturbations is discussed.
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