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quant-ph2026
Lee-Yang zeros of modulated XY spin chains with Dzyaloshinskii-Moriya interaction: zero-contour topology and quantum phase-diagram reconstruction
Hong Jiang, Xiang-Ping Jiang, Yan-Chao Li
We investigate the Lee--Yang zeros (LYZ) of inhomogeneous anisotropic XY spin chains with Dzyaloshinskii--Moriya (DM) interactions in the complex transverse-field plane, focusing o…
cond-mat.dis-nn2026
Exact mobility rings in non-Hermitian quasiperiodically decorated Lieb lattices
Ming-Jie Tao, Yi-Ting Wang, Jing Li +3
The mobility ring (MR), a critical boundary in the complex energy plane separating extended and localized states, is fundamental to understanding the Anderson transition in non-Her…