3 papers
cond-mat.mes-hall2026
Quasiperiodic Skin Criticality in an Exactly Solvable Non-Hermitian Quasicrystal
Zhangyuan Chen, Muhammad Idrees, Ying Yang +2
Critical states in quasiperiodic systems defy the conventional dichotomy between extended and localized states. In this work, we demonstrate that non-Hermiticity fundamentally resh…
nlin.CD2025
Variation of entropy in the Duffing system with the amplitude of the external force
Junfeng Cheng, Xiao-Song Yang
In this paper, we revisit the well-known perturbed Duffing system and investigate its chaotic dynamics by means of numerical Runge--Kutta method based on topological horseshoe theo…
math.DS2025
Incomplete crossing and semi-topological horseshoes
Junfeng Cheng, Xiao-Song Yang
This paper enriches the topological horseshoe theory using finite subshift theory in symbolic dynamical systems, and develops an elementary framework addressing incomplete crossing…