Supercritical coupling emerges from causality-driven reactive coupling in bright-dark supermodes, producing an open-Dirac singularity and generalized BICs where radiative losses and effective gain balance to diverge the total Q factor.
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Unbound states survive and narrow in energy in near-infinitely deep quasiperiodic potentials; in non-Hermitian versions they form mixed bound-unbound phases with exact Lyapunov-exponent boundaries.
A two-channel model demonstrates stabilization of three-body resonances into bound states in the continuum via parameter tuning, shown in 1D mass-imbalanced and 3D Efimov systems with magnetic field control.
citing papers explorer
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Theory of Supercritical Coupling And Generalized Bound States in the Continuum
Supercritical coupling emerges from causality-driven reactive coupling in bright-dark supermodes, producing an open-Dirac singularity and generalized BICs where radiative losses and effective gain balance to diverge the total Q factor.
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Unbound States and Mixed Bound--Unbound Phases in Near-Infinitely Deep Potentials
Unbound states survive and narrow in energy in near-infinitely deep quasiperiodic potentials; in non-Hermitian versions they form mixed bound-unbound phases with exact Lyapunov-exponent boundaries.
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Stabilization of three-body resonances to bound states in a continuum
A two-channel model demonstrates stabilization of three-body resonances into bound states in the continuum via parameter tuning, shown in 1D mass-imbalanced and 3D Efimov systems with magnetic field control.