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A schematic model for QCD II: finite temperature regime

S. Jesgarz·S. Lerma·P. O. Hess·O. Civitarese·M. Reboiro
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Abstract

A schematic model for QCD, developed in a previous paper, is applied to calculate meson properties in the high temperature (up to 0.5 GeV) regime. It is a Lipkin model for quark-antiquark pairs coupled to gluon pairs of spin zero. The partition function is constructed with the obtained meson spectrum and several thermodynamical observables are calculated, like: the energy density, heat capacity, as well as relative production rates of mesons and absolute production rates for pions and kaons. The model predictions show a qualitative agreement with data. Based on these results we advocate the use of the model as a toy model for QCD.

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S. Jesgarz, S. Lerma, P. O. Hess, O. Civitarese, M. Reboiro. 2003-02-05. A schematic model for QCD II: finite temperature regime. https://doi.org/10.1103/physrevc.67.055210

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