Viscosity and thermal conductivity effects at first-order phase transitions in heavy-ion collisions

Effects of viscosity and thermal conductivity on the dynamics of first-order phase transitions are studied. The nuclear gas-liquid and hadron-quark transitions in heavy-ion collisions are considered. We demonstrate that at nonzero thermal conductivity, κ ≠ 0, onset of spinodal instabilities occurs on an isothermal spinodal line, whereas for κ = 0 instabilities take place at lower temperatures, on an adiabatic spinodal.