Finite Temperature Lattice QCD --- Baryons in the Quark--Gluon Plasma

Abstract

Baryonic correlation functions provide an ideal tool to study parity doubling and chiral symmetry using lattice simulations. We present a study using 2 + 1 flavors of anisotropic Wilson clover fermions on the FAST-SUM ensembles and find clear evidence that parity doubling emerges in the quark-gluon plasma. This result is confirmed on the level of spectral functions, which are obtained using a MEM reconstruction. We further highlight the importance of Gaussian smearing in this study.

Determination of the shear viscosity and light quark diffusivity of QGP with two-particle correlation functions

“…Recently, Pratt et al compared hydrodynamic calculations that include quark diffusivity of light quarks and scattering of hadrons with preliminary data reported by the ALICE collaboration [29,30]. The calculations were performed with several levels of quark diffusivity corresponding to 1/2, 1, 2, and 4 times the diffusivity predicted by Lattice QCD (LQCD) calculations [32]. It emerged that the ALICE data are best matched by calculations performed with the nominal diffusivity obtained by LQCD but the data are likely compatible also with somewhat smaller or larger values of the diffusivity.…”

“…III. Section IV discusses the results in light of predictions of the light quark diffusivity by LQCD [32].…”