Speaker
Description
In the presence of the chiral symmetry, the vector and axial-vector meson channels are expected to be degenerate. With Generation 2 and Generation 2L FASTSUM lattice gauge field ensembles at non-zero temperature, the FASTSUM collaboration studied the mesonic/baryonic correlator ratios at finite temperature. They also studied the effect of small baryon chemical potential on the mesonic correlators using the Taylor expansion method. Here, using the Maximum Entropy Method (MEM), we reconstruct spectral functions of corresponding mesonic channels at non-zero temperature. These results are analyzed together with the respective correlators, augmented with leading-order terms in the Taylor expansion at small baryon chemical potential, to understand a possible origin of the degeneracy in the chiral symmetry restored phase. In this preliminary report, we discuss the systematic effects and motivate future studies on Generation 3 ensembles which have a finer temporal lattice spacing.