Classification of "Quaternionic" Bloch-bundles: Topological Quantum Systems of type AII
Classification of "Quaternionic" Bloch-bundles: Topological Quantum Systems of type AII
复制标题
“四元”布洛赫丛的分类:AII 型拓扑量子系统
DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
Kiyonori Gomi
中科院分区:
文献类型:
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作者:
G. Nittis;Kiyonori Gomi
We provide a classification of type AII topological quantum systems in dimension d=1,2,3,4. Our analysis is based on the construction of a topological invariant, the FKMM-invariant, which completely classifies "Quaternionic" vector bundles (a.k.a. "symplectic" vector bundles) in dimension d<4. This invariant takes value in a proper equivariant cohomology theory and, in the case of examples of physical interest, it reproduces the familiar Fu-Kane-Mele index. In the case d=4 the classification requires a combined use of the FKMM-invariant and the second Chern class. Among the other things, we prove that the FKMM-invariant is a bona fide characteristic class for the category of "Quaternionic" vector bundles in the sense that it can be realized as the pullback of a universal topological invariant.
DOI:
10.1007/s11040-012-9123-9
发表时间:
2013
期刊:
Mathematical Physics, Analysis and Geometry
影响因子:
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作者:
J. C. Avila;H. Schulz-Baldes;C. Villegas-Blas
通讯作者:
C. Villegas-Blas