Thermal fluctuations in the interacting pion gas

Abstract

We derive the two-particle fluctuation correlator in a thermal gas of pi-mesons to the lowest order in an interaction due to a resonance exchange. A diagrammatic technique is used. We discuss how this result can be applied to event-by-event fluctuations in heavy-ion collisions, in particular, to search for the critical point of QCD. As a practical example, we determine the shape of the rapidity correlator.

12 pages, 4 figures, RevTeX

References in corpus (4)

• Transverse momentum fluctuations due to temperature variation in high-energy nuclear collisions
• Baryon Fluctuations and the QCD Phase Transition
• Charge Fluctuations at Disoriented Chiral Transition
• Comment on `Charged Particle Ratio Fluctuation as a Signal for Quark-Gluon Plasma' and `Fluctuation Probes of Quark Deconfinement'

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