most citedTopological Classification of Gapped Spin Chains :Quantized Berry Phase as a Local Order Parameter

80 citations · 138 across the 3 of their papers we have counts for

collaborators

1 paper

cond-mat.str-el2008★ 35 cited

Degeneracy and Consistency Condition of Berry phases: Gap Closing under the Twist

Takaaki Hirano, Hosho Katsura, Yasuhiro Hatsugai

We have discussed a consistency condition of Berry phases defined by a local gauge twist and spatial symmetries of the many body system. It imposes a non trivial gap closing condit…