55 citations · 157 across the 8 of their papers we have counts for
8 papers
Ferromagnetism and phase separation in one-dimensional d-p and periodic Anderson models
M. Guerrero, R. M. Noack
Using the Density Matrix Renormalization Group, we study metallic ferromagnetism in a one-dimensional copper-oxide model which contains one oxygen p-orbital and one copper d-orbita…
Random Walk Beyond Hartree-Fock
J. E. Gubernatis, M. Guerrero
We give a brief discussion of the recently developed Constrained-Path Monte Carlo Method. This method is a quantum Monte Carlo technique that eliminates the fermion sign problem pl…
Study of Pairing Correlations in the Attractive Hubbard Model on Chains, Ladders, and Squares
M. Guerrero, G. Ortiz, J. E. Gubernatis
We report the results of zero temperature quantum Monte Carlo simulations and zero temperature mean-field calculations of the attractive Hubbard model on chains, ladders, and squar…
Correlated Wave-Functions and the Absence of Long Range Order in Numerical Studies of the Hubbard Model
M. Guerrero, G. Ortiz, J. E. Gubernatis
We present a formulation of the Constrained Path Monte Carlo (CPMC) method for fermions that uses trial wave-functions that include many-body effects. This new formulation allows u…
Stripes in a three-chain Hubbard ladder: a comparison of density-matrix renormalization group and constrained-path Monte Carlo results
J. Bonca, J. E. Gubernatis, M. Guerrero +2
Using both the density-matrix renormalization group method and the constrained-path quantum Monte Carlo method, we have studied the ground-state energies and the spin and hole dens…
Quantum Monte Carlo Study of Hole Binding and Pairing Correlations in the Three-Band Hubbard Model
M. Guerrero, J. E. Gubernatis, Shiwei Zhang
We simulated the 3-band Hubbard model using the Constrained Path Monte Carlo (CPMC) method in search for a possible superconducting ground state. The CPMC is a ground state method…