Consequences of temperature fluctuations in observables measured in high energy collisions

Details Consequences of temperature fluctuations in observables measured in high energy collisions Consequences of temperature fluctuations in observables measured in high energy collisions

2012-03-20

arxiv.org/abs/1203.4452v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revised version of the invited contribution to The European Physical Journal A (Hadrons and Nuclei) topical issue about 'Relat

Scientific paper

We review the consequences of intrinsic, nonstatistical temperature fluctuations as seen in observables measured in high energy collisions. We do this from the point of view of nonextensive statistics and Tsallis distributions. Particular attention is paid to multiplicity fluctuations as a first consequence of temperature fluctuations, to the equivalence of temperature and volume fluctuations, to the generalized thermodynamic fluctuations relations allowing us to compare fluctuations observed in different parts of phase space, and to the problem of the relation between Tsallis entropy and Tsallis distributions. We also discuss the possible influence of conservation laws on these distributions and provide some examples of how one can get them without considering temperature fluctuations.

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