Topological susceptibility in high temperature full QCD via staggered spectral projectors

We compute the topological susceptibility of 𝑁 𝑓 = 2 + 1 QCD at the physical point in a temperature range going from 200 to 600 MeV. We adopt a multicanonical approach to enhance topological ﬂuctuations and a deﬁnition of the susceptibility based on the spectral projectors over the eigenmodes of the staggered Dirac operator. This method allows to reduce lattice artifacts aﬀecting the standard gluonic deﬁnition, making the continuum limit extrapolation more reliable