NONLINEAR
PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal
2009, Vol.12, No.4, pp.334-337
Multiplicity Fluctuations and Temperature
Fluctuations.
Grzegorz Wilk and Zbigniew Włodarczyk
We argue that specific fluctuations observed in high-energy
nuclear collisions can be attributed to intrinsic fluctuations of
temperature of the hadronizing system formed in such processes and
therefore can be described by the same nonextensivity parameter
q characterizing Tsallis statistics describing such systems (for
one recovers the usual Boltzmann-Gibbs
approach). It means that |q-1|, which is a direct measure of
temperature fluctuations, can also be expressed by the observed
mean multiplicity, 
, and by its variance,
Var(N). This allows to deduce from the experimental data the
system size dependence of parameter q with q = 1 corresponding
to an infinite, thermalized source with a fixed temperature, and
with the observed q > 1 corresponding to a finite source in
which both the temperature and energy fluctuate.
Key words:
Multiparticle production processes, multiplicity
fluctuations, nonextensive statistical models
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Last updated: February 15, 2010