2004/02/18 by Girish S. Setlur, Setlur, Girish S.
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Advanced Chemical Physics Studies #Quantum chaos and dynamical systems
paper · pdf · doi:10.48550/arxiv.cond-mat/0402472
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.