Simulation of an ensemble of Nf = 2 + 1 + 1 twisted mass cloverimproved fermions at physical quark masses

Jacob Finkenrath; Constantia Alexandrou; Simone Bacchio; Panagiotis Charalambous; Petros Dimopoulos; Roberto Frezzotti; Karl Jansen; Bartosz Kostrzewa; Giancarlo Rossi; Carsten Urbach

doi:10.1051/epjconf/201817502003

Proceedings

Open Access

EPJ Web of Conferences 175, 02003 (2018)
https://doi.org/10.1051/epjconf/201817502003

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

Jacob Finkenrath¹^*, Constantia Alexandrou¹^,2, Simone Bacchio²^,3, Panagiotis Charalambous¹^,2, Petros Dimopoulos⁴^,5, Roberto Frezzotti⁴, Karl Jansen⁵, Bartosz Kostrzewa⁶, Giancarlo Rossi⁴^,5 and Carsten Urbach⁶

¹ Computation-based Science and Rechnology Research Center, The Cyprus Institute, Nicosia, 20, Constantinou Kavafi Str., Nicosia 2121, Cyprus
² Department of Physics, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
³ Bergische Universität Wuppertal, Wuppertal, Germany
⁴ Dipartimento di Fisica, Università di Roma “Tor Vergata" and INFN, Sezione di Roma 2, Via della Ricerca Scientifica - 00133 Rome, Italy
⁵ Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Compendio del Viminale, Piazza del Viminiale 1, I-00184, Rome, Italy
⁶ NIC, DESY, Zeuthen, Germany
⁷ HISKP (Theory), Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany

^* Speaker, e-mail: j.finkenrath@cyi.ac.cy

Published online: 26 March 2018

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 64³ × 128 with a lattice spacing a ~ 0:08 fm. We show preliminary results on the pion and kaon mass and decay constants.

© The Authors, published by EDP Sciences, 2018

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