arXiv:cond-mat/9709102 · Physical Review Letters

The Hubbard Quantum Wire

You‐Quan Li, Christian Gruber

Published Feb 2, 1998• 14 citations

Abstract

By introducing a boundary condition for the quantum wire, the Hubbard model is solved exactly by means of the Bethe ansatz. The wave function for the bounded state is clearly defined, and the secular equation for the spectrum is exactly obtained. The ground state and low-lying excited states are studied in the thermodynamic limit. The ground-state energy in the strong coupling limit is obtained explicitly, and compared with the results of a periodic boundary condition.

DOI: 10.1103/physrevlett.80.1034

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