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Applications of models of the Gaudin type to condensed matter physics

Amico, L (Catania)
Tuesday 24 March 2009, 14:00-15:00

Meeting Room 3, CMS


I will discuss certain quantum models ultimately tracing back to the quasiclassical limits of vertex models. I will demonstrate how the rational and trigonometric Gaudin models with periodic or open boundary conditions allow to study pairing force Hamiltonians (the BCS superconductors are an example) exactly. Also spin-boson systems, useful in various fields like atomic and mesoscopic physics and quantum computations, can be seen as related to Gaudin-like Hamiltonian. Such a relation allow to explore non perturbatively some physical regimes that were proven particularly relevant for the applications.


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