Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1996-10-16
Nucl.Phys. A622 (1997) 605-619
Physics
Nuclear Physics
Nuclear Theory
17 pages, 4 postscript figures. Uses elsart.sty and psfig.sty. Improved motivation and typographical corrections. Accepted for
Scientific paper
10.1016/S0375-9474(97)80702-6
The sigma-omega model in mean-field approximation where the meson fields are treated classically, describes much of observed nuclear structure and has been employed to describe the nuclear equation of state up to the quark-gluon phase transition. The acceleration of the meson sources, for example, in relativistic heavy-ion collisions, should result in bremsstrahlung-like radiation of the meson fields. The many mesons emitted serve to justify the use of classical meson fields. The slowing of the nuclei during the collision is modeled here as a smooth transition from initial to final velocity. Under ultra-relativistic conditions, vector radiation dominates. The angular distribution of energy flux shows a characteristic shape. It appears that if the vector meson field couples to the conserved baryon current, independent of the baryonic degrees of freedom, this mechanism will contribute to the radiation seen in relativistic heavy-ion collisions. The possible influence of the quark-gluon plasma is also considered.
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