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Simulation of an ensemble of N_f=2+1+1 twisted mass clover-improved fermions at physical quark masses

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arxiv 1712.09579 v1 pith:5YAGXTFG submitted 2017-12-27 hep-lat

Simulation of an ensemble of N_f=2+1+1 twisted mass clover-improved fermions at physical quark masses

Jacob Finkenrath , Constantia Alexandrou , Simone Bacchio , Panagiotis Charalambous , Petros Dimopoulos , Roberto Frezzotti , Karl Jansen , Bartosz Kostrzewa
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Giancarlo Rossi Carsten Urbach
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classification hep-lat
keywords massfermionslatticephysicalpiontwistedaimedautomatic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a general strategy aimed at generating $N_f=2+1+1$ configurations with quarks at their physical mass using maximally twisted mass fermions to ensure automatic $O(a)$ improvement, in the presence of a clover term tuned to reduce the charged to neutral pion mass difference. The target system, for the moment, is a lattice of size $64^3 \times 128$ with a lattice spacing $a\sim 0.08$ fm. We show preliminary results on the pion and kaon mass and decay constants.

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  1. Performance of Low Mode Averaging on Twisted-Mass Fermion Ensembles at the physical pion mass point

    hep-lat 2026-06 unverdicted novelty 4.0

    Numerical tests show low-mode averaging reduces noise in light meson and baryon observables on physical-pion twisted-mass ensembles, yielding renormalized chiral condensate 269.5(4.5) MeV.