A method using ultra-high boost stability analysis and gamma-suppression derives necessary causality conditions for relativistic hydrodynamics, demonstrated in conformal Muller-Israel-Stewart theory.
Relativistic fluid dynamics: physics for many different scales
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Any standalone hydrodynamic EFT is acausal and requires UV completions with transient modes to restore causality.
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Necessary conditions for causality from linearized stability at ultra-high boosts
A method using ultra-high boost stability analysis and gamma-suppression derives necessary causality conditions for relativistic hydrodynamics, demonstrated in conformal Muller-Israel-Stewart theory.
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Causal UV completions of relativistic hydrodynamics
Any standalone hydrodynamic EFT is acausal and requires UV completions with transient modes to restore causality.