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arxiv: 0807.4469 · v1 · submitted 2008-07-28 · ✦ hep-ph

The Phase Diagram of Hadronic Matter

classification ✦ hep-ph
keywords densityhadronicmatterbaryonincreasingphasespatialbags
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We interpret the phase structure of hadronic matter in terms of the basic dynamical and geometrical features of hadrons. Increasing the density of constituents of finite spatial extension, by increasing the temperature T or the baryochemical potential mu, eventually "fills the box" and eliminates the physical vacuum. We determine the corresponding transition as function of T and mu through percolation theory. At low baryon density, this means a fusion of overlapping mesonic bags to one large bag, while at high baryon density, hard core repulsion restricts the spatial mobility of baryons. As a consequence, there are two distinct limiting regimes for hadronic matter. We compare our results to those from effective chiral model studies.

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