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cond-mat.stat-mech2003
Combinatorial Solution of One-Dimensional Quantum Systems
Domingos H. U. Marchetti, Claudio F. S. Rodrigues
We give a self-contained exposition of the combinatorial solution of quantum mechanical systems of coupled spins on a one-dimensional lattice. Using Trotter formula, we write the p…
cond-mat.stat-mech1998
The Falicov-Kimball Model with Long--Range Hopping Matrices
Oscar Bolina, Domingos H. U. Marchetti
The ground state nature of the Falicov-Kimball model with unconstrained hopping of electrons is investigated. We solve the eigenvalue problem in a pedagogical manner and give a com…