Tight-binding reproduces spatial intensity distributions but fails to capture complex oscillatory phase dynamics when benchmarked against exact z-dependent SUSY solutions in longitudinally modulated PT-symmetric waveguides.
Junker,Supersymmetric Methods in Quantum and Statistical Physics(Springer, 1996)
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Exact versus tight-binding models in longitudinally modulated $\mathcal{PT}$-symmetric coupled waveguides
Tight-binding reproduces spatial intensity distributions but fails to capture complex oscillatory phase dynamics when benchmarked against exact z-dependent SUSY solutions in longitudinally modulated PT-symmetric waveguides.