The imprints of superstatistics in multiparticle production processes

• Autorzy: Grzegorz Wilk , Zbigniew Włodarczyk
• Języki publikacji: EN

Abstrakty

EN

We provide an update of the overview of imprints of Tsallis nonextensive statistics seen in a multiparticle production processes. They reveal an ubiquitous presence of power law distributions of different variables characterized by the nonextensivity parameter q > 1. In nuclear collisions one additionally observes a q-dependence of the multiplicity fluctuations reflecting the finiteness of the hadronizing source. We present sum rules connecting parameters q obtained from an analysis of different observables, which allows us to combine different kinds of fluctuations seen in the data and analyze an ensemble in which the energy (E), temperature (T) and multiplicity (N) can all fluctuate. This results in a generalization of the so called Lindhard’s thermodynamic uncertainty relation. Finally, based on the example of nucleus-nucleus collisions (treated as a quasi-superposition of nucleon-nucleon collisions) we demonstrate that, for the standard Tsallis entropy with degree of nonextensivity q < 1, the corresponding standard Tsallis distribution is described by q′ = 2 − q > 1.

Słowa kluczowe

EN

superstatistics; multiparticle production processes

• Czasopismo: Open Physics
• Rocznik: 2012
• Tom: 10
• Numer: 3
• Strony: 568-575

Daty

wydano

2012-06-01

online

2012-06-17

Twórcy

autor

Grzegorz Wilk

• Theoretical Physics Department, National Centre for Nuclear Research, Hoża 69, 00-681, Warsaw, Poland,

autor

Zbigniew Włodarczyk

• Institute of Physics, Jan Kochanowski University, Świȩtokrzyska 15, 25-405, Kielce, Poland,

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Identyfikatory

DOI

10.2478/s11534-011-0111-7