Multiple coherence resonances by time-periodic coupling strength in scale-free networks of bursting neurons |
| |
Authors: | L. Wang Y. B. Gong X. Lin B. Xu |
| |
Affiliation: | 1.School of Physics,Ludong University,Yantai,P.R. China |
| |
Abstract: | We investigate the algebraic structure of flat energy bands a partial filling of which may give rise to a fractional quantum anomalous Hall effect (or a fractional Chern insulator) and a fractional quantum spin Hall effect. Both effects arise in the case of a sufficiently flat energy band as well as a roughly flat and homogeneous Berry curvature, such that the global Chern number, which is a topological invariant, may be associated with a local non-commutative geometry. This geometry is similar to the more familiar situation of the fractional quantum Hall effect in two-dimensional electron systems in a strong magnetic field. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|