Relativistic dissipative spin hydrodynamics from kinetic theory with a nonlocal collision term
Abstract
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 timescales are comparable to those of the usual dissipative currents. Finally, the Navier-Stokes limit of the Pauli-Lubanski vector receives contributions proportional to the shear tensor of the fluid, which implies that the polarization of hadrons observed in heavy-ion collisions is influenced by dissipative effects.
- Publication:
-
Physical Review D
- Pub Date:
- November 2022
- DOI:
- 10.1103/PhysRevD.106.L091901
- arXiv:
- arXiv:2208.01955
- Bibcode:
- 2022PhRvD.106i1901W
- Keywords:
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- Nuclear Theory
- E-Print:
- 7 pages, 1 figure