376 citations · 7.2k across the 150 of their papers we have counts for
8 papers · 1 filter
Transition from nodal loop to nodal chain phase in a periodically modulated optical lattice
Chuanhao Yin, Linhu Li, Shu Chen
We propose to study the transition from a nodal loop to nodal chain phase in a tunable two-dimensional -flux lattice with periodical modulation potential. The Hamiltonian descri…
Characterization of symmetry-protected topological phases in polymerized models by trajectories of Majorana stars
Chao Yang, Huaiming Guo, Li-Bin Fu +1
By using Majorana's stellar representation, we give a clear geometrical interpretation of the topological phases of inversion-symmetric polymerized models by mapping the Bloch stat…
PT-Symmetry in Non-Hermitian Su-Schrieffer-Heeger model with complex boundary potentials
Baogang Zhu, Rong Lu, Shu Chen
We study the parity- and time-reversal PT symmetric non-Hermitian Su-Schrieffer-Heeger (SSH) model with two conjugated imaginary potentials at two end sites. The SSH model…
Intrinsic relation between ground-state fidelity and the characterization of a quantum phase transition
Shu Chen, Li Wang, Yajiang Hao +1
The notion of fidelity in quantum information science has been recently applied to analyze quantum phase transitions from the viewpoint of the ground state (GS) overlap for various…
One-dimensional fermionic gases with attractive p-wave interaction in a hard-wall trap
Yajiang Hao, Yunbo Zhang, Shu Chen
We investigate the ground state of the one-dimensional fermionic system enclosed in a hard-wall trap with attractive contact p-wave interactions. Based on the Bethe ansatz method,…
Fidelity and Quantum phase transition for the Heisenberg chain with the next-nearest-neighbor interaction
Shu Chen, Li Wang, Shi-Jian Gu +1
In this paper, we investigate the fidelity for the Heisenberg chain with the next-nearest-neighbor interaction (or the model) and analyze its connections with quantum pha…
Quantum dynamics of repulsively bound atom pairs in the Bose-Hubbard model
Li Wang, Yajiang Hao, Shu Chen
We investigate the quantum dynamics of repulsively bound atom pairs in an optical lattice described by the periodic Bose-Hubbard model both analytically and numerically. In the str…
Ground-state Competition of Two-Component Bosons in Optical Lattice near a Feshbach Resonance
Liping Guo, Yunbo Zhang, Shu Chen
We investigate the ground state properties of an equal mixture of two species of bosons in its Mott-insulator phase at a filling factor two per site. We identify one type of spin t…