2020/02/05 by Shuzhe Shi, Charles Gale, Sangyong Jeon
Physics and Astronomy · #Classical mechanics #High-Energy Particle Collisions Research #Kinetic energy #Kinetic theory #Physics #Quantum Chromodynamics and Particle Interactions #Quantum, superfluid, helium dynamics #Spin (aerodynamics) #Statistical physics #Theoretical physics #Thermodynamics #hep-ph #nucl-th
paper · pdf · doi:10.1016/j.nuclphysa.2020.121949
4 pages, contribution to the proceeding of XXVIIIth International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019)
arxiv created 2020/02/05 · openalex publication_date 2020/12/11 · arxiv updated 2021/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The total angular momentum is conserved in the evolution of the Quark-Gluon Plasma (QGP) created in heavy-ion collision, and consists of two sectors: the orbital angular momentum (OAM) caused by kinetic motion, and the spin, an intrinsic degree of freedom of quarks and gluons. Microscopic scattering processes allow the conversion between these two components, hence the spin density could eventually have non-trivial influence on the QGP evolution. A hydrodynamic theory, with the spin polarization effect properly taken into account, is required to quantitatively study the polarization rate for observed hadrons, e.g. the Λ-hyperon. In this work, we start with chiral kinetic theory and construct the spin hydrodynamic framework for a chiral spinor system. We obtain the equations of motion of second-order dissipative relativistic fluid dynamics with non-trivial spin polarization density.