Perfect spin hydrodynamics at all orders in spin polarization
Abstract
We compare two recently developed frameworks of perfect spin hydrodynamics for spin-1/2 particles, based respectively on classical kinetic theory and the Wigner function. We show that the conserved currents in both approaches have the same form at each order of the expansion in the components of the spin polarization tensor ω . The only difference is a relative multiplicative factor, which is equal to 1 at the lowest nontrivial order and increases monotonically with the expansion order.
Fields of Study & Subjects
Quantum many-body systems
Quantum chaos and dynamical systems
Quantum Chromodynamics and Particle Interactions
Publication details
- Journal / source
- Physics Letters B
- Publisher
- Elsevier BV
- Volume
- 873
- Pages
- 140205–140205
- Publication date
- 23 January 2026
- Language
- EN