The Hubbard Model: Recent Results by Mario G Rasetti

By Mario G Rasetti

This selection of articles presents authoritative and updated reports at the Hubbard version. it is going to be helpful to graduate scholars and researchers within the box.

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The Hubbard Model: Recent Results

This choice of articles offers authoritative and up to date stories at the Hubbard version. it is going to be worthy to graduate scholars and researchers within the box.

Extra resources for The Hubbard Model: Recent Results

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50 8:: 1-n Fig. 4. Magnetic phase diagram (cf. Ref. i 0). to third order in w/qvF, one obtains a T 4 Ln T contribution to the free energy. , ( 1 _ __ 40 (T~)3 0 rr12 Aa

B39 (1989) 4191. B. I. Shraiman, and E. D. Siggia, Phys. Rev. Lett. 62 (1989) 1564. I. Affleck and J. B. Marston, Phys. Rev. B37 (1988) 3774. P. W. Anderson, B. S. Shastry and D. Hristopoulos, Phys. Rev. B40 (1989) 8939. P. Lederer, D. Poilblanc and T. M. Rice, Phys. Rev. Lett. 63 (1989) 907. This page is intentionally left blank THE t-I AND FRUSTRATED HEISENBERG MODELS: A STATUS REPORT ON NUMERICAL STUDIES ELBIO DAGOTTO Institute for Theoretical Physics, University of California at Santa Barbara, Santa Barbara, CA 93106, USA Recent numerical work on the t-J model and the frustrated spin-~ Heisenberg antiferromagnet is reviewed.

2. One hole in the t-J model: ground state properties At half-filling the t-J model reduces to the Heisenberg model. This is a welcome result since we know the Heisenberg model has a Neelgroundstate 6 ,7 with infinite range antiferromagnetic correlations at zero temperature, and experimentally the existence of antiferromagnetism has been clearly established in the new materials. Then, the most important situation corresponds to the analysis of the t-J model with doping. If this' model is realistic then at low temperatures and.

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