Relativistic diffusive transport

Details Relativistic diffusive transport Relativistic diffusive transport

2009-11-16

arxiv.org/abs/0911.3126v1

Physics

High Energy Physics

High Energy Physics - Theory

24 pages

Scientific paper

We discuss transport equations resulting from relativistic diffusions in the proper time. We show that a solution of the transport equation can be obtained from the solution of the diffusion equation by means of an integration over the proper time. We study the stochastic processes solving the relativistic diffusion equation and the relativistic transport equation. We show that the relativistic transport equation for massive particles in the light cone coordinates and for massless particles in spatial momentum coordinates are related to the (generalized) Bessel diffusion which has an analytic solution. The solution describes a particle moving in a fixed direction whose frequency distribution is the Bessel process. An approach to an equilibrium in a moving frame is discussed. We formulate the equilibrating diffusion and transport processes in a Lorentz covariant way.

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