A first look at maximally twisted mass lattice QCD calculations at the physical point

TL;DR

This paper presents initial results of lattice QCD simulations at the physical point using maximally twisted mass Wilson fermions, including a new lattice action and comparisons to previous results, with plans for extending to more flavors.

Contribution

It introduces a lattice action with clover and twisted mass terms for maximally twisted mass Wilson fermions at the physical point and discusses simulation strategies for Nf=2+1+1 flavors.

Findings

Monte Carlo histories of a single run are shown.

Measurements compare favorably with previous Nf=2 results.

A strategy for extending to Nf=2+1+1 is outlined.

Abstract

In this contribution, a first look at simulations using maximally twisted mass Wilson fermions at the physical point is presented. A lattice action including clover and twisted mass terms is presented and the Monte Carlo histories of one run with two mass-degenerate flavours at a single lattice spacing are shown. Measurements from the light and heavy-light pseudoscalar sectors are compared to previous $N_f = 2$ results and their phenomenological values. Finally, the strategy for extending simulations to $N_f = 2 + 1 + 1$ is outlined.