The compositeness of near-threshold eigenstates with Coulomb plus short-range forces is determined solely by the Coulomb scattering length, effective range, and Bohr radius, with the Coulomb interaction qualitatively altering threshold behavior and internal structure compared to short-range cases.
Moiseyev,Non-Hermitian Quantum Mechanics(Cam- bridge University Press, Cambridge, 2011)
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Nilpotence and mathematical induction enable systematic design of photonic systems with exceptional points of orders 3, 6, 7, and 14, showing enhanced directional and emission responses.
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Compositeness of near-threshold eigenstates with Coulomb plus short-range interactions
The compositeness of near-threshold eigenstates with Coulomb plus short-range forces is determined solely by the Coulomb scattering length, effective range, and Bohr radius, with the Coulomb interaction qualitatively altering threshold behavior and internal structure compared to short-range cases.
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Higher-order exceptional points unveiled by nilpotence and mathematical induction
Nilpotence and mathematical induction enable systematic design of photonic systems with exceptional points of orders 3, 6, 7, and 14, showing enhanced directional and emission responses.