Spin transport in non-Hermitian quantum systems

LS Lima - Scientific Reports, 2023 - nature.com
Transport in non-Hermitian quantum systems is studied. The goal is a better understanding
of transport in non-Hermitian systems like the Lieb lattice due to its flat bands and the …

Liouvillian skin effect in a one-dimensional open many-body quantum system with generalized boundary conditions

L Mao, X Yang, MJ Tao, H Hu, L Pan - Physical Review B, 2024 - APS
The non-Hermitian skin effect, in which eigenstates of non-Hermitian Hamiltonians are
localized at one boundary in the open boundary condition, has attracted great interest …

Non-Hermitian skin effect in a one-dimensional interacting Bose gas

L Mao, Y Hao, L Pan - Physical Review A, 2023 - APS
Non-Hermitian skin effect (NHSE) is a unique feature studied extensively in noninteracting
non-Hermitian systems. In this paper, we extend the NHSE originally discovered in …

Two-dimensional anisotropic non-Hermitian Lieb lattice

LC Xie, HC Wu, XZ Zhang, L Jin, Z Song - Physical Review B, 2021 - APS
We study an anisotropic two-dimensional non-Hermitian Lieb lattice, where the staggered
gain and loss present in the horizontal and vertical directions, respectively. The intracell …

-pairing ground states in the non-Hermitian Hubbard model

XZ Zhang, Z Song - Physical Review B, 2021 - APS
The introduction of non-Hermiticity has greatly enriched the research field of traditional
condensed matter physics and eventually led to a series of discoveries of exotic …

Variational matrix product state approach for non-hermitian system based on a companion hermitian hamiltonian

Z Guo, ZT Xu, M Li, L You, S Yang - arXiv preprint arXiv:2210.14858, 2022 - arxiv.org
Non-Hermitian systems exhibiting topological properties are attracting growing interest. In
this work, we propose an algorithm for solving the ground state of a non-Hermitian system in …

Quantum phase transition in a quantum Ising chain at nonzero temperatures

KL Zhang, Z Song - Physical Review Letters, 2021 - APS
We study the response of a thermal state of an Ising chain to a nonlocal non-Hermitian
perturbation, which coalesces the topological Kramer-like degeneracy in the ferromagnetic …

Reciprocal reservoir induced non-Hermitian skin effect

X Li, MA Begaowe, S Zhang, B Flebus - arXiv preprint arXiv:2307.15792, 2023 - arxiv.org
The non-Hermitian skin effect (NHSE), which describes the localization of macroscopic
fraction of eigenstates at a specific boundary, is inherently tied to nonreciprocity. Here, we …

Steady helix states in a resonant XXZ Heisenberg model with Dzyaloshinskii-Moriya interaction

ES Ma, KL Zhang, Z Song - Physical Review B, 2022 - APS
We systematically investigate possible helix states in the XXZ Heisenberg model with the
Dzyaloshinskii-Moriya (DM) interaction. Exact solutions show that a set of precession helix …

Exceptional point and hysteresis trajectories in cold Rydberg atomic gases

J Zhang, EZ Li, YJ Wang, B Liu, LH Zhang… - arXiv preprint arXiv …, 2024 - arxiv.org
The interplay between strong long-range interactions and the coherent driving contribute to
the formation of complex patterns, symmetry, and novel phases of matter in many-body …