Hello, The kwant documentation on kwant.solvers.common.GreensFunction() states that calling this method will return the retarded Green's function. Does this method evaluate the equilibrium or non-equilibrium retarded Green's function? I am interested in the time-dependent non-equilibrium density matrix, which can be written as the kinetic lesser NE Green's function G_<(t,t')
rho_neq (t) = -iG_<(t,t')|t=t'. Thank you in advance. Cheers, Rudolf
