AN INVESTIGATION OF NUCLEAR MATTER IN EXTREME CONDITIONS

Abstract

In the paper a dynamics of the quark-gluon plasma has been defined by the evolution parameter, which at high energies depends on collision energy of atomic nuclei for appropriate multiplicities of secondary hadrons. A purpose of present work is to investigate processes occurred in the QGP at external conditions change (i.e. the evolution parameter, that is energy, exposed in the system) on the basis of nonlinear dynamics one-dimensional equation solution in phase momentum space. The nonlinear evolution equation for partons momentum distribution has been solved by the method of Poincaré mappings. The state of hadronic matter under critical conditions (that is the QGP) is defined by macroparameters such as density >10 0, 0~1,6 1014 g/cm3 , temperature T~200 MeV and chemical potential. As a first approximation, the dynamics of the system has been determined by means of the evolution parameter. For specified region of the evolution parameter values 0.75÷0.89 intermediate phase mixture, i.e. a compound, which consists of quarks, gluons and hadrons, probably exist.