Abstract
The paper is focused on calculating the finite temperature and quark/baryon chemical potential dependencies of the quark condensate and the π-and σ-meson masses in the subcritical region in the instanton model of the QCD vacuum. The impact of phononlike excitation of instanton liquid on the characteristics of the σ meson in such an environment is also examined.
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Original Russian Text © G.M. Zinovjev, S.V. Molodtsov, A.N. Sissakian, A.S. Sorin, 2008, published in Pis’ma v Zhurnal Fizika Elementarnykh Chastits i Atomnogo Yadra, 2008, No. 1 (143), pp. 18–27.
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Zinovjev, G.M., Molodtsov, S.V., Sissakian, A.N. et al. Properties of lightest mesons at finite temperature and quark/baryon chemical potential in the instanton model of the QCD vacuum. Phys. Part. Nuclei Lett. 5, 7–12 (2008). https://doi.org/10.1134/S1547477108010020
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DOI: https://doi.org/10.1134/S1547477108010020