Simulation of infinitely strongly interacting fermions from one to two dimensions
The limit of infinitely strong interaction is the relevant one for understanding the low energy sector of strongly correlated electronic systems like high-temperature superconductors and new related compounds like the so-called ladder materials. The t-J model is the generic one, where strong correlation is taken into account by projecting out doubly occupied sites. We present simulations for both the single-hole and finite doping cases of the t-J model performed with newly developed quantum Monte Carlo algorithms, in chains, ladders, and planes, where the spectral function and the quasiparticle weight are obtained. (C) 2002 Elsevier Science B.V All rights reserved.
strongly correlated fermions loop algorithms determinantal algorithm