Manuel Naviglio (Pisa U., INFN)
In this talk we present our study of the electromagnetic conductivity in dense quark-gluon plasma obtained within lattice simulations with $𝑁_𝑓 = 2 + 1$ dynamical quarks. We employ stout improved rooted staggered quarks at the physical point and the tree-level Symanzik improved gauge action. The simulations are performed at imaginary chemical potential. To reconstruct electromagnetic conductivity from current-current correlators, we employ the Tikhonov regularisation method as well as the modified Backus-Gilbert method, computing the convolution of the spectral density with the target function. Our study indicates that electromagnetic conductivity of quark-gluon plasma rapidly grows with the real baryon density.
Francesco Sanfilippo Lorenzo Maio (University of Pisa and INFN section of Pisa) Manuel Naviglio (Pisa U., INFN) Nikita Astrakhantsev Massimo D'Elia (Pisa U. and INFN Pisa) Victor Braguta (JINR, BLTP)