Study on Quark ManyBody Systems at Relativistic Energies.pdfVIP

Study on Quark Many-Body Systems at Relativistic Energies I. V. Grossu (1), C. Besliu (1), Al. Jipa (1), D. Felea (2), C. C. Bordeianu (1) (1) University of Bucharest, Faculty of Physics, Bucharest-Magurele, Romania (2) Institute of Space Sciences, Bucharest-Magurele, Romania We present some possible phenomenological connections between the results obtained from a numerical study on the evolution of a three-dimensional, relativistic, many-body system, and the formation of Quark Gluon Plasma. The asymptotic freedom property is introduced by employing a harmonic term in the bi-particle potential. In this context, we considered also some results obtained from a semiclassical study, applied to the constituents of nucleons. Another quantum input comes from using the Fermi-Dirac statistics. 1. INTRODUCTION One of the most important challenges of the last years in physics, the Quark Gluon Plasma [1,2], brings us today the unique opportunity of reproducing, in laboratory, complex processes, similar with the evolution of early Universe at ages under one microsecond. The nucleus-nucleus collisions at relativistic and ultra-relativistic energies are the only experimentally way to investigate this unusual state of matter, which exists for a very short time interval (10-20 Fm/c), and which creation supposes high densities and temperatures 3 (ρ=2GeV/Fm , T=150-250MeV). For a better phenomenological understanding of the complexity involved, we started from the numerical analysis of a relativistic, many-body system [3,4], and we tried to find some connections with the existing knowledge on QGP. 2. ON THE NUMERICAL METHOD The simulation was imple