Causality and classical dispersion relations
Raphael E. Hoult, Pavel Kovtun
Abstract
We explore the consequences of relativistic causality and covariant stability for short-wavelength dispersion relations in classical systems. For excitations described by a finite number of partial differential equations, as is the case in relativistic hydrodynamics, we give causality and covariant stability constraints on the excitation’s frequency at large momenta. Published by the American Physical Society 2024
Topics & Concepts
Causality (physics)Dispersion (optics)MathematicsEconometricsMathematical economicsStatistical physicsPhysicsOpticsQuantum mechanicsBlack Holes and Theoretical PhysicsAlgebraic structures and combinatorial modelsNoncommutative and Quantum Gravity Theories