Publication: Hadronic gas chiral phase transition within generalized chiral perturbation theory
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1999-01-01
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Amer Physical Soc.
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Abstract
We study the temperature evolution of the [(q) over bar q] condensate below the chiral phase transition. The hadronic gas is described using a virial expansion within generalized chiral perturbation theory. In such a way, we can implement both the large or small chiral condensate scenarios and analyze the condensate dependence on the values of the lightest quark masses.
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©1998 The American Physical Society.
I am especially indebted to A. Dobado for introducing me to the subject of pion gas thermodynamics, as well as J. Stern for explaining to me the present status of some error estimates, D. Espriu for several comments and suggestions, and J. Wells for a careful reading of the manuscript. I would also like to thank the Theory Group at SLAC for their kind hospitality and the Spanish Ministerio de Educación y Cultura for financial support. This work has been partially supported by the Spanish CICYT under contract AEN93-0776. This research was supported by the Department of Energy under contract DE-AC03-76SF00515.