Work

Hybrid approach to perfect and dissipative spin hydrodynamics

Year: 2024

Type: article

Abstract: A hybrid framework of spin hydrodynamics is proposed that combines the results of kinetic theory for particles with spin 1 / 2 with the Israel-Stewart method of introducing nonequilibrium dynamics. The framework of kinetic theory is used to define the perfect-fluid description that conserves baryon number, energy, linear momentum and spin part of angular momentum. This leads to the entropy conservation although, in the presence of spin degrees of freedom, the perfect-fluid formalism includes extra terms whose structure is usually attributed to dissipation. The genuine dissipative terms appear from the condition of positive entropy production in nonequilibrium processes. They are responsible for the transfer between the spin and orbital parts of angular momentum, with the total angular momentum being conserved. Published by the American Physical Society 2024

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.110.096018

Authors: Zbigniew Drogosz, Wojciech Florkowski, Mykhailo Hontarenko

Institution: Jagiellonian University

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Narodowe Centrum Nauki

Award: G6385391674