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Sensitivity of the chiral phase transition of QCD to the scalar meson sector

T. Herpay·A. Patkos·Zs. Szep
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Abstract

Gribov's theory of light quark confinement implies the existence of two kinds of scalar bound states. The phase diagram of the three-flavor QCD is mapped out in the (m_pi-m_K)-plane with help of the SU_L(3)xSU_R(3) linear sigma model supplemented with the assumption that the masses of the so-called superbound scalars do not change under the variation of the pion and kaon mass. The phase boundary along the m_pi=m_K line is found in the interval 15 MeV<m_crit<25 MeV, irrespective which f_0-sigma linear combination is identified with the pure superbound state.

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T. Herpay, A. Patkos, Zs. Szep. 2005-09-14. Sensitivity of the chiral phase transition of QCD to the scalar meson sector. https://doi.org/10.1142/9789812773784_0026

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