2 papers
cond-mat.mtrl-sci2026
Long-Lived Coherence between Incoherent Excitons revealed by Time-Resolved ARPES: An Exact Solution
Zhenlin Zhang, Wei Hu, Enrico Perfetto +1
We investigate the exciton dynamics in an exactly solvable two-band model for semiconductors. The model incorporates light-matter, electron-electron and electron-phonon interaction…
cond-mat.mes-hall2025
Non-Hermitian Bethe-Salpeter Equation for Open Systems: Emergence of Exceptional Points in Excitonic Spectra from First Principles
Zhenlin Zhang, Wei Hu, Enrico Perfetto +1
In open quantum systems hosting excitons, dissipation mechanisms critically shape the excitonic dynamics, band-structure and topological properties. A microscopic understanding of…