Beyond Thimbles: Sign-Optimized Manifolds for Finite Density
High Energy Physics - Lattice
2018-10-17 v2
Abstract
The sign problem of relativistic field theories at finite fermion chemical potential has been approached by deforming the domain of integration into complex field space. We present a method for selecting a deformed manifold of integration which is a local maximum of the average phase, and demonstrate this method on the three-dimensional Thirring model. Finally, we compare the performance of this method, in the heavy-dense limit, to direct integration on the Lefschetz thimbles.
Cite
@article{arxiv.1810.06529,
title = {Beyond Thimbles: Sign-Optimized Manifolds for Finite Density},
author = {Scott Lawrence},
journal= {arXiv preprint arXiv:1810.06529},
year = {2018}
}
Comments
7 pages; proceedings from LATTICE2018