Speed of propagation of infinitesimal disturbances in a relativistic gas
Abstract
The phase speed of infinitesimal disturbances in a relativistic gas is shown to be less than the speed of light. The result is obtained by means of the kinetic theory of gases and is valid for any collision operator. The treatment applies, in particular, to the speeds of propagation of sound, shear, and heat waves. These waves are further shown to be damped.
 Publication:

Physical Review Letters
 Pub Date:
 April 1983
 DOI:
 10.1103/PhysRevLett.50.1122
 Bibcode:
 1983PhRvL..50.1122C
 Keywords:

 Gas Dynamics;
 Propagation Velocity;
 Relativistic Velocity;
 Wave Propagation;
 Boltzmann Transport Equation;
 Kinetic Theory;
 Relativistic Plasmas;
 S Waves;
 Sound Propagation;
 Thermal Radiation;
 Physics (General);
 47.75.+f;
 03.40.Gc;
 Relativistic fluid dynamics