Ground-State Dynamical Correlation Functions: An Approach from Density Matrix Renormalization Group Method
Condensed Matter
2016-08-31 v1
Abstract
A numerical approach to ground-state dynamical correlation functions from Density Matrix Renormalization Group (DMRG) is developed. Using sum rules, moments of a dynamic correlation function can be calculated with DMRG, and with the moments the dynamic correlation function can be obtained by the maximum entropy method. We apply this method to one-dimensional spinless fermion system, which can be converted to the spin 1/2 Heisenberg model in a special case. The dynamical density-density correlation function is obtained.
Cite
@article{arxiv.cond-mat/9502091,
title = {Ground-State Dynamical Correlation Functions: An Approach from Density Matrix Renormalization Group Method},
author = {Hanbin Pang and H. Akhlaghpour and M. Jarrell},
journal= {arXiv preprint arXiv:cond-mat/9502091},
year = {2016}
}
Comments
11 pages, latex, 4 figures