2 papers
quant-ph2026
Thermal Suppression of Dynamical Quantum Phase Transitions in Finite-Dimensional Systems A Quasi-Hermitian Framework
Jia-Chen Tang, Xu-Yang Hou, Ming-Zhang Wang +1
We investigate dynamical quantum phase transitions (DQPTs) in finite-dimensional systems prepared in thermal equilibrium states and subjected to a sudden quench. A mixed-state Losc…
quant-ph2026
Geometric and Topological Obstructions to Hermitianization in Quasi-Hermitian Quantum Systems
Ming-Zhang Wang, Xu-Yang Hou, Hao Guo
Quasi-Hermitian quantum systems, including -symmetric ones, can be mapped to equivalent Hermitian systems via a similarity transformation that redefines the inner pro…