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arXiv · 1701.01398

Extended soft wall model with background related to features of QCD thermodynamics

Rico Zöllner·Burkhard Kampfer
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Abstract

The soft wall model is extended to accommodate at the same time (i) approximately linear $\rho$ meson Regge trajectories at zero temperature $T$, (ii) various options for the thermodynamics with reference to QCD (cross over or second-order transition or first-order transition at $T_c$), and (iii) the appearance of vector meson states at $T \leq T_c$. While the vector meson masses display some modest model dependence very near to $T_c$, they stay below $T_c$ to good accuracy independent of the temperature, that is nearly as at $T=0$, thus being very consistent with the thermo-statistical models widely employed in analyses of the hadron yields in relativistic heavy-ion collisions in a region where baryon densitiy effects can be neglected and the vacuum hadron masses are used.

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Rico Zöllner, Burkhard Kampfer. 2017-01-05. Extended soft wall model with background related to features of QCD thermodynamics. https://doi.org/10.1140/epja%2Fi2017-12328-0

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