Generalized thermodynamic relations for perfect spin hydrodynamics

TL;DR

This paper develops generalized thermodynamic relations within relativistic perfect spin hydrodynamics, enabling consistent treatment of spin degrees of freedom and laying groundwork for future dissipative extensions.

Contribution

It introduces thermodynamic relations that incorporate spin tensors derived from microscopic calculations into relativistic perfect spin hydrodynamics.

Findings

Consistent framework for spin degrees of freedom established.

Foundation for adding dissipative effects to spin hydrodynamics.

Links microscopic spin tensor structures to macroscopic thermodynamics.

Abstract

Generalized thermodynamic relations are introduced into the framework of a relativistic perfect spin hydrodynamics. They allow for consistent treatment of spin degrees of freedom, including the use of spin tensors whose structure follows from microscopic calculations. The obtained results are important for establishing consistency between different formulations of spin hydrodynamics and form the basis for introducing dissipative corrections.