Nonlinear Constraints on Relativistic Fluids Far from Equilibrium

Fábio S. Bemfica, Marcelo M. Disconzi, Vu Hoang, Jorge Noronha, Maria Radosz

Research output: Contribution to journalArticlepeer-review


New constraints are found that must necessarily hold for Israel-Stewart-like theories of fluid dynamics to be causal far away from equilibrium. Conditions that are sufficient to ensure causality, local existence, and uniqueness of solutions in these theories are also presented. Our results hold in the full nonlinear regime, taking into account bulk and shear viscosities (at zero chemical potential), without any simplifying symmetry or near-equilibrium assumptions. Our findings provide fundamental constraints on the magnitude of viscous corrections in fluid dynamics far from equilibrium.

Original languageEnglish (US)
Article number222301
JournalPhysical review letters
Issue number22
StatePublished - Jun 4 2021

ASJC Scopus subject areas

  • General Physics and Astronomy


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