Analysis of the N=4 Hubbard ring using a counting operator
Strongly Correlated Electrons
2015-05-13 v2
Abstract
We prove three theorems about the use of a counting operator to study the spectrum of model Hamiltonians. We analytically calculate the eigenvalues of the Hubbard ring with four lattice positions and apply our theorems to describe the observed level crossings.
Cite
@article{arxiv.0811.3077,
title = {Analysis of the N=4 Hubbard ring using a counting operator},
author = {Tobias Verhulst and Ben Anthonis and Jan Naudts},
journal= {arXiv preprint arXiv:0811.3077},
year = {2015}
}
Comments
reference added tot the work of Schumann, small corrections made