Causality and classical dispersion relations

被引:12
|
作者
Hoult, Raphael E. [1 ]
Kovtun, Pavel [1 ]
机构
[1] Univ Victoria, Dept Phys & Astron, POB 1700 STN CSC, Victoria, BC V8W 2Y2, Canada
基金
美国国家科学基金会; 加拿大自然科学与工程研究理事会;
关键词
D O I
10.1103/PhysRevD.109.046018
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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.
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页数:10
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