376 citations · 7.2k across the 150 of their papers we have counts for
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Knot topology of exceptional point and non-Hermitian no-go theorem
Haiping Hu, Shikang Sun, Shu Chen
Exceptional points (EPs) are peculiar band singularities and play a vital role in a rich array of unusual optical phenomena and non-Hermitian band theory. In this paper, we provide…
Non-Hermitian Aubry-André model with Power-Law Hopping
Zhihao Xu, Xu Xia, Shu Chen
We study a non-Hermitian AA model with long-range hopping, , and different choices of quasiperiodic parameters to be a member of the metallic mean family. We find that w…
Exact zeros of the Loschmidt echo and quantum speed limit time for the dynamical quantum phase transition in finite-size systems
Bozhen Zhou, Yumeng Zeng, Shu Chen
We study exact zeros of Loschmidt echo and quantum speed limit time for dynamical quantum phase transition in finite size systems. Our results illustrate that exact zeros of Loschm…
Exact solution of single impurity problem in non-reciprocal lattices: impurity induced size-dependent non-Hermitian skin effect
Yanxia Liu, Yumeng Zeng, Linhu Li +1
Non-Hermitian non-reciprocal systems are known to be extremely sensitive to boundary conditions, exhibiting diverse localizing behaviors and spectrum structures when translational…
Exact Mobility Edges and Topological Phase Transition in Two-Dimensional non-Hermitian Quasicrystals
Zhihao Xu, Xu Xia, Shu Chen
The emergence of the mobility edge (ME) has been recognized as an important characteristic of Anderson localization. The difficulty in understanding the physics of the MEs in three…
Three-body bound states of two bosons and one impurity in one dimension
Yanxia Liu, Yi-Cong Yu, Shu Chen
We investigate one-dimensional three-body systems composed of two identical bosons and one imbalanced atom (impurity) with two-body and three-body zero-range interactions. For the…