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The QCD critical point from the Nambu-Jona-Lasino model with a scalar-vector interaction

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arxiv 2004.05754 v1 pith:FG3OF6VH submitted 2020-04-13 nucl-th hep-ph

classification nucl-thhep-ph
keywords criticaldiagraminteractionmodelphasepointnambu-jona-lasinoscalar-vector
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We study the critical point in the QCD phase diagram in the Nambu-Jona-Lasino (NJL) model by including a scalar-vector coupled interaction. We find that varying the strength of this interaction, which has no effect on the vacuum properties of QCD, can significantly affect the location of the critical point in the QCD phase diagram, particularly the value of the cirtical temperature. This provides a convenient way to use the NJL-based transport or hydrodynamic model to extract information about the QCD phase diagram from relativistic heavy-ion collisions.

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