53 citations · 341 across the 22 of their papers we have counts for
5 papers · 1 filter
Infinite bound states and energy spectrum induced by a Coulomb-like potential of type III in a flat band system
Yi-Cai Zhang
In this work, we investigate the bound states in a one-dimensional spin-1 flat band system with a Coulomb-like potential of type III, which has a unique non-vanishing matrix elemen…
Infinite bound states and hydrogen atom-like energy spectrum induced by a flat band
Yi-Cai Zhang, Guo-Bao Guo
In this work, we investigate the bound state problem in one dimensional spin-1 Dirac Hamiltonian with a flat band. It is found that, the flat band has significant effects on the bo…
Lyapunov exponent, mobility edges, and critical region in the generalized Aubry-Andre model with an unbounded quasiperiodic potential
Yi-Cai Zhang, Yan-Yang Zhang
In this work, we investigate the Anderson localization problems of the generalized Aubry-André model (Ganeshan-Pixley-Das Sarma's model) with an unbounded quasi-periodic potential…
Superfluid density and collective modes of fermion superfluid in dice lattice
Yu-Rong Wu, Xiao-Fei Zhang, Chao-Fei Liu +2
The superfluid properties of attractive Hubbard model in dice lattice are investigated. It is found that three superfluid order parameters increase as the interaction increases. Wh…
Bound states in the continuum (BIC) protected by self-sustained potential barriers in a flat band system
Yi-Cai Zhang
In this work, we investigate the bound states in the continuum (BIC) of a one-dimensional spin-1 flat band system. It is found that, when the potential is sufficiently strong, ther…