Violation of Luttinger's Theorem in the Two-Dimensional t-J Model

Details Violation of Luttinger's Theorem in the Two-Dimensional t-J Model Violation of Luttinger's Theorem in the Two-Dimensional t-J Model

1998-03-11

arxiv.org/abs/cond-mat/9803140v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures. Version with grayscale figures available upon request

Scientific paper

10.1103/PhysRevLett.81.2966

We have calculated the high temperature series for the momentum distribution function n_k of the 2D t-J model to 12th order in inverse temperature. By extrapolating the series to T=0.2J we searched for a Fermi surface of the 2D t-J model. We find that three criteria used for estimating the location of a Fermi surface violate Luttinger's Theorem, implying the 2D t-J model does not have an adiabatic connection to a non-interacting model.

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