791 citations · 3.1k across the 26 of their papers we have counts for
8 papers · 1 filter
Two-Dimensional Quantum XY Model with Ring Exchange and External Field
R. G. Melko, A. W. Sandvik, D. J. Scalapino
We present the zero-temperature phase diagram of a square lattice quantum spin 1/2 XY model with four-site ring exchange in a uniform external magnetic field. Using quantum Monte C…
Effect of an Electron-phonon Interaction on the One-electron Spectral Weight of a d-wave Superconductor
A. W. Sandvik, D. J. Scalapino, N. E. Bickers
We analyze the effects of an electron-phonon interaction on the one-electron spectral weight A(k,omega) of a d_{x^2-y^2} superconductor. We study the case of an Einstein phonon mod…
Stripes on a 6-Leg Hubbard Ladder
Steven R. White, D. J. Scalapino
While DMRG calculations find stripes on doped n-leg t-J ladders, little is known about the possible formation of stripes on n-leg Hubbard ladders. Here we report results for a 7x6…
Electron-phonon vertex in the two-dimensional one-band Hubbard model
Z. B. Huang, W. Hanke, E. Arrigoni +1
Using quantum Monte Carlo techniques, we study the effects of electronic correlations on the effective electron-phonon (el-ph) coupling in a two-dimensional one-band Hubbard model.…
Superconducting gap for a 2-leg t-J ladder
Didier Poilblanc, D. J. Scalapino, Sylvain Capponi
Single-particle diagonal and off-diagonal Green's functions of a 2-leg t-J ladder at 1/8-doping are investigated by Exact Diagonalisations techniques. A numerically tractable expre…
Canonical and Grand Canonical Ensemble Expectation Values from Quantum Monte Carlo Simulations
R. D. Sedgewick, D. J. Scalapino, R. L. Sugar +1
We show how canonical ensemble expectation values can be extracted from quantum Monte Carlo simulations in the grand canonical ensemble. In order to obtain results for all particle…