2021/11/22 by Massimo D’Elia, Massimo D'Elia, Lorenzo Maio +2 · 52 citations
Physics and Astronomy · #Condensed matter physics #Critical point (mathematics) #Crossover #Fermion #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Lattice field theory #Particle physics #Particle physics theoretical and experimental studies #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #Thermal #Thermodynamics #hep-lat #hep-ph #hep-th
paper · pdf · open access · doi:10.1103/physrevd.105.034511
published in Physical review. D/Physical review. D. 105(3) (American Physical Society) · 11 pages, 14 figures
arxiv created 2021/11/22 · openalex publication_date 2022/02/23 · openalex created_date 2022/02/24 · arxiv updated 2022/03/14 · openalex updated_date 2026/08/01
We provide numerical evidence that the thermal QCD crossover turns into a first order transition in the presence of large enough magnetic background fields. The critical endpoint is found to be located between eB = 4 GeV2 (where the pseudocritical temperature is Tc = (98 ± 3) MeV) and eB = 9 GeV2 (where the critical temperature is Tc = (63 ± 5) MeV). Results are based on the analysis of quark condensates and number susceptibilities, determined by lattice simulations of Nf = 2+1 QCD at the physical point, discretized with three different lattice spacings, a = 0.114, 0.086 and 0.057 fm, via rooted stout staggered fermions and a Symanzik tree level improved pure gauge action. We also present preliminary results regarding the confining properties of the thermal theory, suggesting that they could change drastically going across the phase transition