The density of states approach to the sign problem
High Energy Physics - Lattice
2019-01-25 v1 Strongly Correlated Electrons
Computational Physics
Abstract
Approaches to the sign problem based on the density of states have been recently revived by the introduction of the LLR algorithm, which allows us to compute the density of states itself with exponential error reduction. In this work, after a review of the generalities of the method, we show recent results for the Bose gas in four dimensions, focussing on the identification of possible systematic errors and on methods of controlling the bias they can introduce in the calculation.
Cite
@article{arxiv.1901.07602,
title = {The density of states approach to the sign problem},
author = {Biagio Lucini and Olmo Francesconi and Markus Holzmann and Antonio Rago},
journal= {arXiv preprint arXiv:1901.07602},
year = {2019}
}
Comments
1 + 11 pages, 6 figures. Invited talk presented by B. Lucini at the conference "XIIIth Quark Confinement and the Hadron Spectrum", Maynooth University, Ireland, 1-6 August 2018