ID: cond-mat/0402472

Hydrodynamic Formulation of the Hubbard Model

February 18, 2004

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Girish S. HRI, Allahabad Setlur
Condensed Matter
Strongly Correlated Electron...

In this article, we show how to recast the Hubbard model in one dimension in a hydrodynamic language and use the path integral approach to compute the one-particle Green function. We compare with the Bethe ansatz results of Schulz and find exact agreement with the formulas for spin and charge velocities and anomalous exponent in weak coupling regime. These methods may be naturally generalized to more than one dimension by simply promoting wavenumbers to wavevectors.

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