2024-03-28T10:04:04Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00027498
2022-04-27T08:53:16Z
117:483
3:62:5587:1827
ZQ topological invariants for Polyacetylene, Kagome and Pyrochlore lattices
初貝, 安弘
Hatsugai, Y.
Maruyama, I.
© EPLA, 2011
Adiabatic ZQ invariants by quantized Berry phases are defined for gapped electronic systems in d-dimensions (Q=d+1). This series includes Polyacetylene, Kagome and Pyrochlore lattice, respectively for d=1, 2 and 3. The invariants are quantum Q-multimer order parameters to characterize the topological phase transitions by the multimerization. This fractional quantization is protected by the global ZQ equivalence even with particle-particle interaction. As for the chiral symmetric case, a topological form of the Z2 invariant is explicitly given as well.
IOP Publishing
2011-07
eng
journal article
http://hdl.handle.net/2241/117377
https://tsukuba.repo.nii.ac.jp/records/27498
10.1209/0295-5075/95/20003
0295-5075
AA12194839
EPL
95
2
20003
https://tsukuba.repo.nii.ac.jp/record/27498/files/EPL_95-2.pdf
application/pdf
334.1 kB
2013-12-25