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Resonance states in an effective chiral hadronic model

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Rau P., Steinheimer J., Schramm S., Stöcker H.
Open Physics
|
2012
|
vol. 10
|
issue 6
1302-1305
EN
With an effective chiral flavour SU(3) model we show the effect of hadronic resonances on the QCD phase diagram. We state that varying the resonance couplings to the scalar and vector fields affects the order and location of the phase transition, the possible existence of a critical end point (CEP), and the thermodynamic properties. We present (strange) quark number susceptibilities at zero baryochemical potential and at three different points at the phase transition. Comparing results to lattice QCD, we state that reasonable large vector couplings limit the phase transition to a smooth crossover ruling out a CEP.
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