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

TL;DR

This paper discusses a strategy for generating $N_f=2+1+1$ lattice QCD configurations with physical quark masses using twisted mass fermions and a clover term, focusing on reducing discretization errors and preliminary results on meson properties.

Contribution

The paper introduces a general approach for simulating $N_f=2+1+1$ quark flavors at physical masses with twisted mass fermions and a clover term, ensuring $O(a)$ improvement.

Findings

Preliminary pion and kaon mass measurements.

Initial decay constant estimates for pion and kaon.

Configuration generation strategy for physical quark masses.

Abstract

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.