A simple, general and practically exact method is developed to calculate the ground states of 1D macroscopic quantum systems with translational symmetry. Applied to the Hubbard model, a modest calculation reproduces the Bethe Ansatz results.
@article{arxiv.1008.0366,
title = {New method for the quantum ground states in one dimension},
author = {S. G. Chung},
journal= {arXiv preprint arXiv:1008.0366},
year = {2015}
}