Multiplicity fluctuations in heavy ion collisions using canonical and grand canonical ensemble
نویسندگان
چکیده
We report the higher order cumulants and their ratios for baryon, charge and strangeness multiplicity in canonical and grand-canonical ensembles in ideal thermal model including all the resonances. When the number of conserved quanta is small, an explicit treatment of these conserved charges is required, which leads to a canonical description of the system and the fluctuations are significantly different from the grand canonical ensemble. Cumulant ratios of total charge and net-charge multiplicity as a function of collision energies are also compared in grand canonical ensemble. PACS. 25.75.Gz, 12.38.Mh, 21.65.Qr, 25.75.-q, 25.75.Nq.
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