Dear ALPS users,
I'm trying to get some benchmark numbers for the 2D Hubbard model. I'm figuring out the input from the tutorial and by reading the XML files and source code, but I wonder if there a more complete manual somewhere so I can optimize the input for conserved quantum numbers, etc.? I read the arXiv article and two Powerpoint presentations but haven't found what I'm looking for. For example, can I use SU(2) - | S^2 S_z > - configurations, or better yet, SO(4) - | S^2 S_z J^2 J_z > - configurations?
It was mentioned somewhere that 1.3 would have spatial symmetry built in the diagonalization code but I could not run the 4x4 Hubbard on a workstation, which should have been possible if the translation and C4v groups were utilized. What is the status of that development?
Given the current functionality, what should I need for the half-filled 4x4 Hubbard using Lanczos? I should have almost unlimited resources at NERSC but installation there is not going well and I'd rather use a 4 Xeon-core, 4 GB workstation if possible.
Thanks for all your answers.
Jeff UChicago