Exact solution of a one-dimensional fermion model with interchain tunneling

Abstract

A fermion model consisting of two chains with interchain tunneling is formulated and solved exactly by the Bethe ansatz method. The interchain tunneling leads to Cooper pair like bound states and a threshold energy is required to overcome the binding energy. The correlation functions manifest superconducting properties.

10 pages, 4 Postscript figures appended as uuencoded compressed tar-file to appear in PRB Rapid Communications, preprint Cologne-94-4743

References in corpus (1)

• Excitation spectrum and critical exponents of a one-dimensional integrable model of fermions with correlated hopping

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