Transient Relativistic Fluid Dynamics in a General Hydrodynamic Frame
Jorge Noronha, Michał Spaliński, Enrico Speranza
Abstract
We propose a new theory of second-order viscous relativistic hydrodynamics which does not impose any frame conditions on the choice of the hydrodynamic variables. It differs from Mueller-Israel-Stewart theory by including additional transient degrees of freedom, and its first-order truncation reduces to Bemfica-Disconzi-Noronha-Kovtun theory. Conditions for causality and stability are explicitly given in the conformal regime. As an illustrative example, we consider Bjorken flow solutions to our equations and identify variables which make a hydrodynamic attractor manifest.
Topics & Concepts
PhysicsCausality (physics)AttractorRelativistic dynamicsDegrees of freedom (physics and chemistry)Classical mechanicsTruncation (statistics)Fluid dynamicsTransient (computer programming)Flow (mathematics)Dynamics (music)Stability (learning theory)Order (exchange)MechanicsMathematicsMathematical analysisComputer scienceQuantum mechanicsOperating systemFinanceStatisticsMachine learningAcousticsEconomicsHigh-Energy Particle Collisions ResearchComputational Fluid Dynamics and AerodynamicsPulsars and Gravitational Waves Research