Speaker
Prof.
Joerg Aichelin
(SUBATECH)
Description
We present the novel microscopic n-body dynamical transport approach PHQMD
(Parton-Hadron-Quantum-Molecular-Dynamics) for the description of particle
production and cluster formation in heavy-ion reactions at relativistic energies.
The PHQMD extends the established PHSD (Parton-Hadron-String-Dynamics) transport
approach by introducing a n-body quantum molecular dynamic type propagation of hadrons.
The n-body origin of this approach allows for a dynamical description of cluster
formation (including that of hypernuclei) as well as for studying fluctuations
of fragments and hadrons associated with a first order phase transition predicted
by phenomenological models for a finite baryon chemical potential and as expected for FAIR
and NICA energies. Due to their one-body nature, this is not possible with the presently
existing mean-field transport models.
We show that this new approach reproduces the available single particle observables
such as rapidity and $p_T$ spectra of produced hadrons and protons
in the energy regime from SIS to SPS. We furthermore show that the presently
available fragment data in this energy regime are well reproduced for fragments
in the projectile/target rapidity as well as for the small fragments observed
at midrapidity. We conclude with predictions for the expected fragments and
hypernuclei produced at NICA and FAIR energies and the results for the midrapidity
fragments observed at RHIC energies.
Author
Prof.
Joerg Aichelin
(SUBATECH)
Co-authors
Dr
Arnaud Le Fèvre
(GSI)
Prof.
Elena Bratkovskaya
(GSI & Uni. Frankfurt, Germany)
Dr
Yvonne Leifels
(GSI)
