6 papers
Periodic dynamics in an Ising chain with a quadratic transverse field
H. P. Zhang, Z. Song
A quadratic well plays a central role in a wide variety of modern physical theories and applications. In this work, we investigate many-body dynamics in a quadratic well, using an…
Bloch oscillations in interacting systems driven by a time-dependent magnetic field
H. P. Zhang, Z. Song
According to Faraday's law in classical physics, a varying magnetic field stimulates an electric eddy field. Intuitively, when a classical field is constant and imposed on a lattic…
Formations of generalized Wannier-Stark ladders: Theorem and applications
H. P. Zhang, Z. Song
The Wannier-Stark ladder (WSL) is a basic concept, supporting periodic oscillation, widely used in many areas of physics. In this paper, we investigate the formations of WSL in gen…
Dynamic Moiré-like pattern in non-Hermitian Wannier-Stark ladder system
H. P. Zhang, Z. Song
We study the dynamical behavior of the non-Hermitian Wannier-Stark ladder system, which is a non-Hermitian Su-Schrieffer-Heeger chain with a position-dependent real potential. In t…
Extended Wannier-Stark ladder and particle-pair Bloch oscillations in dimerized non-Hermitian systems
H. P. Zhang, Z. Song
In the Hermitian regime, the Wannier-Stark ladder characterizes the eigenstates of an electron in a periodic potential with an applied static electric field. In this work, we exten…
Topological quantum slinky motion in resonant extended Bose-Hubbard model
H. P. Zhang, Z. Song
We study the one-dimensional Bose-Hubbard model under the resonant condition, where a series of quantum slinky oscillations occur in a two-site system for boson numbers $n\in \lbra…