SO(4) invariant basis functions for strongly correlated Fermi systems
arXiv:solv-int/9603009 · doi:10.1016/0375-9601(96)00338-6
Abstract
We show how to construct SO(4) invariant functions for strongly correlated Fermi systems on lattices of finite sizes. We illustrate the method on the case of the 1D Hubbard chain with four and with six sites.