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Spin-thermal shear coupling in a relativistic fluid
- Publication Year :
- 2021
-
Abstract
- We show that spin polarization of a fermion in a relativistic fluid at local thermodynamic equilibrium can be generated by the symmetric derivative of the four-temperature vector, defined as thermal shear. As a consequence, besides vorticity, acceleration and temperature gradient, also the shear tensor contributes to the polarization of particles in a fluid. This contribution to the spin polarization vector, which is entirely non-dissipative, adds to the well known term proportional to thermal vorticity and may thus have important consequences for the solution of the local polarization puzzles observed in relativistic heavy ion collisions.<br />Comment: 10 pages, 1 figure; version accepted for publication in Physics Letters B
- Subjects :
- Nuclear Theory
High Energy Physics - Theory
Physics - Plasma Physics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2103.10917
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.physletb.2021.136519