In a Lagrangian model of polarized dissipative fluids, causality couples the spin, shear, and bulk relaxation times through inequalities that can make polarization mask viscosity.
Nonlinear waves in second order conformal hydrodynamics
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In this work we study wave propagation in dissipative relativistic fluids described by a simplified set of the 2nd order viscous conformal hydrodynamic equations. Small amplitude waves are studied within the linearization approximation while waves with large amplitude are investigated using the reductive perturbation method. Our results indicate the presence of a "soliton-like" wave solution in 2nd order conformal hydrodynamics despite the presence of dissipation and relaxation effects.
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Causality of polarizeable dissipative fluids from Lagrangian hydrodynamics
In a Lagrangian model of polarized dissipative fluids, causality couples the spin, shear, and bulk relaxation times through inequalities that can make polarization mask viscosity.