Non-extensive equilibration in relativistic matter

Abstract

We present a view of the non-extensive thermodynamics based on general composition rules. A formal logarithm maps these rules to the addition, which can be used to generate stationary distributions by standard techniques. We review the most commonly used rules and as an application we discuss the Tsallis-Pareto distribution of transverse momenta of energetic hadrons, which emerge from relativistic heavy-ion collisions.

Comments: Talk presented at SigmaPhi 2008 Conference, Crete, Greece. Submitted to Central European Journal for Physics