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تسجيل مستخدم جديدHidden Integrability of a Kondo Impurity in an Unconventional Host
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Valery I. Rupasov
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We study a spin-1/2 Kondo impurity coupled to an unconventional host in which the density of band states vanishes either precisely at (``gapless systems) or on some interval around the Fermi level (``gappedsystems). Despite an essentially nonlinear band dispersion, the system is proven to exhibit hidden integrability and is diagonalized exactly by the Bethe ansatz.
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