Volume 281 - The 26th International Nuclear Physics Conference (INPC2016) - QCD: Partonic phenomena – Friday 16
Improving Polynomial-filtered Hybrid Monte Carlo With Hasenbusch
T. Haar,* W. Kamleh, J. Zanotti, Y. Nakamura
*corresponding author
Full text: pdf
Pre-published on: 2017 May 04
Published on: 2017 May 09
Abstract
The predominant method for generating Lattice QCD configurations is Hybrid Monte Carlo (HMC). In order to speed up this generation,
a wide range of preconditioning techniques that modify the lattice action have been devised.
This work compares the performance of the well-known Hasenbusch preconditioning technique with the polynomial filtering technique on a small $16^3 \times 32$ lattice with two flavours of Wilson fermions at a pion mass $M_{\pi} \sim 400~\mathrm{MeV}$.
We explore a novel method of combining polynomial and Hasenbusch filters, revealing a speedup when compared to the standard two Hasenbusch filters. This comes with the added advantage of simplified tuning.
DOI: https://doi.org/10.22323/1.281.0319
Open Access