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cond-mat.str-el2025
Probing phase transitions in non-Hermitian systems with quantum entanglement
Ling-Feng Zhang, Wing Chi Yu
We study the quantum entanglement and quantum phase transition of the non-Hermitian anisotropic spin- XY model and XXZ model with the staggered imaginary field by anal…
cond-mat.stat-mech2025
Crossover in the Ordered Phase in the Non-Mermin-Wagner-Hohenberg Regime of Spin Models with Long-Range Coupling
Jiewei Ding, Jiahao Su, Ho-Kin Tang +1
Continuous spin models with long-range interactions of the form , where is the distance between two spins and controls the decay of the interaction, exhibit enhance…