Work

Relativistic resistive magnetohydrodynamics for a two-component plasma

Year: 2026

Type: article

Abstract: We derive relativistic resistive magnetohydrodynamics for a two-component ultrarelativistic plasma directly from kinetic theory. Starting with the Boltzmann--Vlasov equation and using the 14-moment approximation in the Landau frame, we obtain coupled evolution equations for the charge diffusion four-current and the shear-stress tensor. Benchmarking against the usual Israel-Stewart type relaxation form shows that this simplified description is accurate for small viscosity to entropy ($η/s$) ratio, vanishing magnetic field, and not so strong electric field. Outside this regime the dynamics depart in a controlled way, i.e., strong electric fields introduce nonlinear back-reaction that delays and reduces current peaks, and a sizable shear-stress is produced even without a flow profile.

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

DOI: 10.1103/tl97-r2kh

Authors: Khwahish Kushwah, Gabriel S. Denicol, Caio V. P. de Brito

Institutions: Universidade Federal Fluminense, University of Helsinki, Helsinki Institute of Physics, University of Jyväskylä

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Academy of Finland, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, European Research Council

Awards: G1659803796, Center of Excellence in Quark Matter, G5729841375, G7419119890