Hot QCD matter around the chiral crossover: a lattice study with
$O(a)$-improved Wilson fermions
Hot QCD matter around the chiral crossover: a lattice study with
$O(a)$-improved Wilson fermions
Using lattice QCD simulations with $O(a)$-improved Wilson quarks and physical up, down and strange quark masses, we investigate the properties of thermal QCD matter at the temperatures $T=\{128,154,192\}\mathrm{MeV}$ with a fixed lattice spacing $a=0.064\mathrm{fm}$ and volume $V=(6.1\text{fm})^3$. We find that the pion quasiparticle, defined as the low-energy pole in the …