Singular forward scattering in the 2D Hubbard model and a renormalized Bethe ansatz ground state
- 29 October 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (18), 2306-2308
- https://doi.org/10.1103/physrevlett.65.2306
Abstract
In a recent Letter we argued that the existence of an upper Hubbard band necessarily would lead to Luttinger liquid (Z=0) properties for a strongly interacting electron gas, as opposed to Fermi liquid. In this paper we identify the singular-scattering diagrams and make a hypothesis about the form of the ground state of the 2D Hubbard model.Keywords
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