Kevin Zambello
(University of Pisa and INFN - Sezione di Pisa)
We report updated results on the determination of Lee-Yang edge (LYE) singularities in QCD using highly improved staggered quarks (HISQ) with physical masses on , , lattices. The singularity structure of QCD in the complex plane is probed using conserved charges calculated at imaginary . The location of the singularities is determined by studying the (uncancelled) poles of multi-point Padé approximants. We show that close to the Roberge-Weiss (RW) transition, the location of the LYE singularities scales according to the 3- universality class. By combining the new data with the data from our previous analysis we extract a rough estimate for the RW temperature in the continuum limit. We also discuss some preliminary results for the singularities close to the chiral phase transition obtained from simulations on , lattices.
Kevin Zambello
(University of Pisa and INFN - Sezione di Pisa)
David Anthony Clarke
(Bielefeld University)
Jishnu Goswami
(RIKEN Center for Computational Science)
Guido Nicotra
(University of Bielefeld)
Christian Schmidt
(Bielefeld University)
Petros Dimopoulos
(University of Parma & INFN)
Francesco Di Renzo
(Università di Parma and INFN)
Simran Singh
(University of Parma & INFN)