Work

Nonlinear causality and stability of perfect spin hydrodynamics and its nonperturbative character

Year: 2026

Type: article

Abstract: Four formulations of perfect spin hydrodynamics for spin- 1 / 2 particles, distinguished by their treatment of spin (classical vs quantum) and by the underlying particle statistics (Boltzmann vs Fermi-Dirac), are analyzed and shown to satisfy the requirements of a divergence-type theory. Moreover, for all the formulations, we define the generating functions associated with the relevant thermodynamic currents and demonstrate that the constructed hydrodynamic theory is nonlinearly causal and stable. The latter is achieved by employing the exact expressions for the distribution functions, indicating a nonperturbative character of our approach.

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

DOI: 10.1103/ly9v-nw35

Authors: Samapan Bhadury, Zbigniew Drogosz, Wojciech Florkowski, Sudip Kumar Kar, Valeriya Mykhaylova

Institutions: Jagiellonian University, Indian Institute of Science Education and Research Berhampur

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

Funders: Narodowe Centrum Nauki, Narodowym Centrum Nauki

Award: G6385391674