  For nucleus-nucleus collisions at Relativistic-Heavy-Ion Collider (RHIC)
energies we calculate observables in two conceptually transport theories, i.e.
the n-body molecular dynamical model RSP and in the
Parton-Hadron-String-Dynamics (PHSD), starting out from the same distribution
of the initial energy density at the quark gluon plasma (QGP) formation time.
The RSP is based on the Nambu Jona-Lasinio (NJL) Lagrangian whereas in PHSD the
partons are described by the dynamical quasi-particle model (DQPM). Despite of
the very different description of the parton properties, their interactions and
of the hadronization in both approaches the final transverse momentum
distributions of pions and kaons are rather similar. Thus it will be difficult
to conclude from the final experimenal data on the details of the initial
plasma properties.
