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cond-mat.supr-con2001★ 45 cited
Integrable models for confined fermions: applications to metallic grains
Luigi Amico, Antonio Di Lorenzo, Andreas Osterloh
We study integrable models for electrons in metals when the single particle spectrum is discrete. The electron-electron interactions are BCS-like pairing, Coulomb repulsion, and sp…
cond-mat.supr-con2001★ 45 cited
Exact correlation functions of the BCS model in the canonical ensemble
Luigi Amico, Andreas Osterloh
We evaluate correlation functions of the BCS model for finite number of particles. The integrability of the Hamiltonian relates it with the Gaudin algebra . Theref…
cond-mat.supr-con2001★ 100 cited
Integrable model for interacting electrons in metallic grains
Luigi Amico, Antonio Di Lorenzo, Andreas Osterloh
We find an integrable generalization of the BCS model with non-uniform Coulomb and pairing interaction. The Hamiltonian is integrable by construction since it is a functional of co…