A correlated three-channel fit of unitarized chiral perturbation theory to lattice QCD pion spectra yields precise physical-point scattering lengths and sigma and rho poles, but with a low rho mass.
Multi-mass solvers for lattice QCD on GPUs
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
Graphical Processing Units (GPUs) are more and more frequently used for lattice QCD calculations. Lattice studies often require computing the quark propagators for several masses. These systems can be solved using multi-shift inverters but these algorithms are memory intensive which limits the size of the problem that can be solved using GPUs. In this paper, we show how to efficiently use a memory-lean single-mass inverter to solve multi-mass problems. We focus on the BiCGstab algorithm for Wilson fermions and show that the single-mass inverter not only requires less memory but also outperforms the multi-shift variant by a factor of two.
fields
hep-lat 1years
2019 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
A cross-channel study of pion scattering from lattice QCD
A correlated three-channel fit of unitarized chiral perturbation theory to lattice QCD pion spectra yields precise physical-point scattering lengths and sigma and rho poles, but with a low rho mass.