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26 April 2024 |
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Article overview
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Properties, ensembles and hadron spectra with Stabilised Wilson Fermions | | Francesca Cuteri
; Anthony Francis
; Patrick Fritzsch
; Giovanni Pederiva
; Antonio Rago
; Andrea Schindler
; Andre Walker-Loud
; Savvas Zafeiropoulos
; | | Date: |
11 Jan 2022 | | Abstract: | In this joint contribution we announce the formation of the "OPEN LATtice
initiative" to study Stabilised Wilson Fermions (SWF). They are a new avenue
for QCD calculations with Wilson-type fermions and we report results on our
continued study of this framework: Tuning the clover improvement coefficient,
and extending the reach of lattice spacings to $a=0.12$ fm. We fix the flavor
symmetric points $m_pi=m_K=412$ MeV at $a=0.055,0.064, 0.077, 0.094, 0.12$ fm
and define the trajectories to the physical point by fixing the trace of the
quark mass matrix. Currently our pion mass range extends down to $m_pisim200$
MeV. We outline our tuning goals and strategy as well as our future planned
ensembles. First scaling studies are performed on $f_pi$ and $m_pi$.
Additionally results of a preliminary continuum extrapolation of $m_N$ at the
flavor symmetric point are presented. Going further a first determination of
the light and strange hadron spectrum chiral dependence is shown, which serves
to check the quality of the action for precision measurements. We also
investigate other quantities such as flowed gauge observables to study how the
continuum limit is approached. Taken together we observe the SWF enable us to
perform stable lattice simulations across a large range of parameters in mass,
volume and lattice spacing. Pooling resources our new initiative has made our
reported progress possible and through it we will share generated gauge
ensembles under an open science philosophy. | | Source: | arXiv, 2201.03874 | | Services: | Forum | Review | PDF | Favorites | |
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