Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1995-09-27
Nucl.Phys.A597:701-726,1996
Physics
Nuclear Physics
Nuclear Theory
22 pages, latex, 12 uuencoded figures
Scientific paper
10.1016/0375-9474(95)00447-5
The width $\Delta T$ of the deconfinement transition region is shown to influence strongly the flow structure in the (Landau-) hydrodynamical expansion of a quark-gluon plasma. For a sharp first order transition ($\Delta T=0$) the mixed phase is rather long-lived, with a lifetime that has a maximum when the initial energy density is at the phase boundary between mixed and pure quark-gluon matter. For increasing $\Delta T$, however, the lifetime decreases rapidly. Hadronic matter, however, remains long-lived as a consequence of the rapid change in the degrees of freedom in the transition region and the corresponding ``softening'' of the equation of state.
Gyulassy Miklos
Rischke Dirk H.
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