IWARA2026 - 12th International Workshop on Astronomy and Relativistic Astrophysics

Relativistic Dissipative Fluids in the Trace-Fixed Particle Frame

Not scheduled

20m

Auditorio José Adem, Mexico

Talk

Speaker

Dr Félix Salazar (Universidad Autónoma Metropolitana (UAM))

Description

In this talk, we present a first-order theory of relativistic dissipative fluids formulated in the trace-fixed particle frame; a variant of Eckart's frame in which the temperature is determined by fixing the trace of the stress-energy tensor. We show that the resulting theory is hyperbolic and causal provided that a single inequality is satisfied. We also prove that global equilibrium states are stable within this framework. We then apply the theory to the cases of hard spheres and hard disks, and briefly outline its generalization to multicomponent fluids.