E. Dagotto, A. Moreo, T. Barnes, "Hubbard model with one hole: ground-state properties," Physical Review B, 40, 6721-5, 1 October 1989.

E. Dagotto, A. Moreo, R. Joynt, S. Bacci, E. Gagliano, "Dynamics of one hole in the t-J model," Physical Review B, 41, 2585-8, 1 February 1990.

Elbio Dagotto (Institute for Theoretical Physics, University of California, Santa Barbara): "The theoretical understanding of high-temperature superconductors is currently one of the main challenges in condensed-matter physics. Many models have been proposed to describe the new materials. In general, however, it is difficult to extract reliable analytic information about their properties. This is why numerical (nonperturbative) methods are important to the analysis of strongly correlated systems. In these `hot' papers, we presented numerical results regarding properties of one `hole' in Hubbard-like models. (Holes are the carriers responsible for superconductivity in the new materials.) A hole is `dressed' by spin-wave excitations, and our numerical...

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