5 papers
Spectral Topology and Non-Bloch Band Theory for Domain-Wall Systems
Mingtao Xu, Rui Wang, Tian-Shu Deng +1
We study the spectral topology of one-dimensional non-Hermitian models in a domain-wall configuration, where different domains are arranged in a ring geometry. While eigenstates ca…
Higher-order Liouvillian exceptional points in the dissipative dynamics of quadratic fermions
Mingtao Xu, Wei Yi
We propose a general class of open fermionic models where quadratic Liouvillians governing the dissipative dynamics feature analytically characterized higher-order exceptional poin…
Observation of Non-Hermitian Spectral Deformation in Complex Momentum Space
Mu Yang, Yue Li, Mingtao Xu +4
Open systems feature a variety of phenomena that arise from non-Hermitian physics. Recent theoretical studies have offered much insights into these phenomena through the non-Bloch…
Characterizing the Yang-Lee zeros of the classical Ising model through dynamic quantum phase transitions
Mingtao Xu, Wei Yi, De-Huan Cai
In quantum dynamics, the Loschmidt amplitude is analogous to the partition function in the canonical ensemble. Zeros in the partition function indicate a phase transition, while th…
Optimal spectral transport of non-Hermitian systems
Mingtao Xu, Zongping Gong, Wei Yi
The optimal transport problem seeks to minimize the total transportation cost between two distributions, thus providing a measure of distance between them. In this work, we study t…