EPJ Web of Conferences 274, 06001 (2022)
https://doi.org/10.1051/epjconf/202227406001

Topological susceptibility in high temperature QCD: a new investigation with spectral projectors

¹ Università di Pisa and INFN Sezione di Pisa, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
² Computation-based Science and Technology Research Center, The Cyprus Institute, 20 Kavafi Str., Nicosia 2121, Cyprus
³ INFN Sezione di Firenze, Via G. Sansone 1, I-50019 Sesto Fiorentino, Firenze, Italy
⁴ Deutsches Elektronen-Synchrotron (DESY), Platanenallee 6, 15738 Zeuthen, Germany
⁵ Dipartimento di Fisica and INFN Sezione di Roma “La Sapienza”, Piazzale Aldo Moro 5, I-00185 Rome, Italy
⁶ INFN Sezione di Roma Tre, Via della Vasca Navale 84, I-00146 Rome, Italy
⁷ Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
⁸ Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal - 42119, Germany
⁹ Dipartimento di Fisica, Università di Roma “Tor Vergata”, Via della Ricerca Scientifica 1, I-00133 Rome, Italy

^* e-mail: a.athenodorou@cyi.ac.cy
^** e-mail: claudio.bonanno@fi.infn.it
^*** e-mail: claudio.bonati@unipi.it
^**** e-mail: giuseppe.clemente@desy.de
^† e-mail: francesco.dangelo@phd.unipi.it
^‡ e-mail: massimo.delia@unipi.it
^§ e-mail: lorenzo.maio@phd.unipi.it
^¶ e-mail: guido.martinelli@roma1.infn.it
^∥ e-mail: francesco.sanfilippo@infn.it
^** e-mail: atodar01@ucy.ac.cy

Published online: 22 December 2022

Abstract

We compute the topological susceptibility of high temperature QCD with 2+1 physical mass quarks using the multicanonical approach and the spectral projector estimate of the topological charge. This approach presents reduced lattice artifacts with respect to the standard gluonic one, and makes it possible to perform a reliable continuum extrapolation.