Relativistic dissipative spin hydrodynamics from kinetic theory with a nonlocal collision term

Understand

We derive relativistic dissipative spin hydrodynamics from kinetic theory featuring a nonlocal collision term using the method of moments.

• In this framework, the components of the spin tensor are dynamical variables which obey relaxation-type equations.
• We find that the corresponding relaxation times are determined by the local part of the collision term, while the nonlocal part contributes to the Navier-Stokes terms in these equations of motion.
• The spin relaxation time scales are comparable to those of the usual dissipative currents.