Fermion bag solutions to some sign problems in four-fermion field theories
High Energy Physics - Lattice
2015-06-12 v1 Strongly Correlated Electrons
Nuclear Theory
Abstract
Lattice four-fermion models containing flavors of staggered fermions, that are invariant under and U(1) chiral symmetries, are known to suffer from sign problems when formulated using the auxiliary field approach. Although these problems have been ignored in previous studies, they can be severe. In this talk, we show that the sign problems disappear when the models are formulated in the fermion bag approach, allowing us to solve them rigorously for the first time.
Keywords
Cite
@article{arxiv.1211.0619,
title = {Fermion bag solutions to some sign problems in four-fermion field theories},
author = {Anyi Li},
journal= {arXiv preprint arXiv:1211.0619},
year = {2015}
}
Comments
10 pages, 9 figures, including the results of U(1) GN model. Proceedings of Extreme QCD (xQCD)2012, August 21 - 23, 2012, The George Washington University, Washington, DC