2 papers
physics.comp-ph2026
Data-driven reconstruction of band dispersion and quantum geometry via Koopman dynamical mode decomposition
Yiming Pan, Jinze He, Jiapeng Yang +1
We present a data-driven framework for reconstructing band structures using Koopman operator analysis and dynamic mode decomposition (Koopman-DMD). Instead of deriving spectra from…
physics.optics2025
Topologically-protected superluminal pair annihilation in photonic time crystals
Liang Zhang, Chenhao Pan, Jinze He +4
Photonic time crystals (PTCs) - dielectric media whose permittivity is periodically modulated in time - map to a Dirac equation with an imaginary mass, opening a momentum gap (k-ga…