Speaker
Daniele Roselli
(University of Florence & INFN Florence, Chinese University of Hong Kong)
Description
Understanding spin polarization in the quark–gluon plasma is a key problem for relativistic spin hydrodynamics and heavy-ion phenomenology. We present an exactly solvable boost-invariant system of non-interacting Dirac fermions in local thermodynamic equilibrium with finite canonical spin potential. This setup allows us to compute exact expectation values of spin polarization, spin density, and thermodynamic observables. We show that shear-induced polarization and the spin Hall effect are absent in the free boost-invariant case, while a finite spin potential generates a non-vanishing polarization. The results provide an exact benchmark for linear-response approaches to spin polarization and for QGP applications.
Authors
Dr
Andrea Palermo
(Universit´e de Tours ITD)
Daniele Roselli
(University of Florence & INFN Florence, Chinese University of Hong Kong)