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Dynamical Properties of a Single Hole in an Antiferromagnet
Didier Poilblanc, Timothy Ziman, H. J. Schulz +1
A finite size scaling analysis of the spectral function and of the optical conductivity of a single hole moving in an antiferromagnetic background is performed. It is shown that bo…
Basis Set Reduction Applied to the Two Dimensional t-Jz Model
Jose Riera, Elbio Dagotto
A simple variation of the Lanczos method is discussed. The new technique is based on a systematic reduction of the size of the Hilbert space of the model under consideration. As an…
Indications of d_{x^2 - y^2} Superconductivity in the Two Dimensional t-J Model
Elbio Dagotto, Jose Riera
Superconducting correlations in the two dimensional model at zero temperature are evaluated using numerical techniques. At the fermionic density $\langle n \rangle \sim…
Generalized spin density wave state of the Hubbard model on the C12 and C60 clusters
L. Bergomi, J. P. Blaizot, Th. Jolicoeur +1
The one-band Hubbard model at half-filling on a truncated tetrahedron (C), and on the C molecule is studied. Within the Hartree-Fock approximation, we find a magnetic…