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physics.class-ph2024
Observation of exceptional points in a spherical open elastic system
Hiroaki Deguchi, Kei Matsushima, Takayuki Yamada
Exceptional points (EPs) are spectral singularities in non-Hermitian systems where eigenvalues and their corresponding eigenstates coalesce simultaneously. In this study, we calcul…
physics.class-ph2024
Non-Bloch band theory for time-modulated discrete mechanical systems
Kei Matsushima, Takayuki Yamada
This study establishes a non-Bloch band theory for time-modulated discrete mechanical systems. We consider simple mass-spring chains whose stiffness is periodically modulated in ti…