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Spectrum of Low-Lying Excitations in a Supersymmetric Extended Hubbard Model by Essler, Fabian H. L.; Korepin, Vladimir E. is a scholarly article available to read on EtoBox.

What is Spectrum of Low-Lying Excitations in a Supersymmetric Extended Hubbard Model about?

We continue the study of the $u(2|2)$-supersymmetric extension of the Hubbard model in one dimension. We determine the excitation spectrum at zero temperature even in the sectors where the ground states are $u(2|2)$-descendants of Bethe states. The excitations include spinons, holons, electrons, localons (local electrons pairs, moving coherently through the lattice) and their bound states. The spectra are found to be very different for repulsive and attractive on-site interaction. We also study the thermodynamics of the model.

Author

Essler, Fabian H. L.; Korepin, Vladimir E.

Published

1993

Language

EN