We describe a quantum algorithm to compute the density of states and thermal equilibrium properties of quantum many-body systems. We present results obtained by running this algorithm on a software implementation of a 21-qubit quantum computer for the case of an antiferromagnetic Heisenberg model on triangular lattices of different size.
@article{arxiv.quant-ph/9911037,
title = {Quantum Statistical Mechanics on a Quantum Computer},
author = {H. De Raedt and A. H. Hams and K. Michielsen and S. Miyashita and K. Saito},
journal= {arXiv preprint arXiv:quant-ph/9911037},
year = {2007}
}