Derives closed-form size-dependent dynamical instability threshold γ_c = 2 sin[π/(4N)] for PT-symmetric scattering chains that vanishes in the thermodynamic limit.
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Size-dependent dynamical instability of periodic $\mathcal{PT}$-symmetric scattering systems
Derives closed-form size-dependent dynamical instability threshold γ_c = 2 sin[π/(4N)] for PT-symmetric scattering chains that vanishes in the thermodynamic limit.
- Covariant formulation of the Berry connection in non-Hermitian systems