PoS - Proceedings of Science
Volume 430 - The 39th International Symposium on Lattice Field Theory (LATTICE2022) - Non-zero Temperature
QCD phase diagram in a magnetic background
M. D'Elia, L. Maio*, F. Sanfilippo and A. Stanzione
Full text: pdf
Pre-published on: March 02, 2023
Published on: April 06, 2023
We discuss the QCD phase diagram in the presence of a strong background magnetic field. We provide numerical evidence, based on lattice simulations of QCD with $2+1$ flavours and physical quark masses, for a crossover transition at $eB=4$ GeV$^2$ (with a pseudo-critical temperature $T_c=(98\pm3)$ MeV) and for a first order phase transition at $eB=9$ GeV$^2$ (where the measured critical temperature is $T_c=(63\pm5)$ MeV). We conclude that the critical endpoint is located at $eB=eB_{CEP}$ and $T=T_{CEP}$, where $4$ GeV$^2<eB_{CEP}<9$ GeV$^2$ and $63$ MeV$<T_{CEP}<98$ MeV.
DOI: https://doi.org/10.22323/1.430.0184
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