The quantum effects on strangeness production and evolution in a baryon-rich quark-gluon plasma fireball

There will be two extreme situations while two ultrarelativistic heavy-ions are colliding. One is that they pass through each other as that the target is apparent to the bomb, then at the centre which they just passed through a baryon-poor and high exciting quark-gluon plasma fireball (QGP) was created; another is that the bomb is fully stopped by the target in the case of that the target is black to the bomb, and in the stopped region a baryon-rich QGP fireball was formed. Recent experiment appears that both cases may exist. To the strangeness production and evolution, it is very different for the baryon-rich fireball and the baryon-poor one. In the baryon-rich region, considering the quantum effect, because of the effect of Pauli Blocking, the strangeness production rate is reduced, but it changes smoothly and slowly, hence it should be considered as a necessary factor