Speaker
Description
The QCD phase transition is studied within the thermodynamic geometry. Through the definition of a metric in the thermodynamic space, one builds a scalar thermodynamic geometry curvature, $R$, in the usual way and investigates the nature of the interactions. $R$, indeed, reflects some important features of the system: e.g. the so-called interaction hypothesis, $|R|\sim \xi^d$, where $\xi$ is the correlation length and $d$ the effective spatial dimension of the underling thermodynamic system. Moreover, the sign of $R$ seems to provide information on the system interactions (attractive or repulsive, fermionic or bosonic). We have studied $R$ in different model: Nambu-Jona-Lasinio model with two and three flavors, Linear Sigma model, Hadron Resonance Gas model and Lattice-QCD. In all of these models, $R$ shows a characteristic behavior, different for each transition type (if present): I or II order or crossover.
| Track | QCD phase diagram and critical point |
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