Recent experimental results obtained at the Relativistic Heavy-Ion Collider(RHIC) will be discussed. Investigations of different nucleus-nucleuscollisions in recent years focus on two main tasks, namely, the detailed studyof sQGP properties and the exploration of the QCD phase diagram. Results at topRHIC energy provide important information about event shapes as well astransport and thermodynamic properties of the hot medium for various flavors.Heavy-ion collisions are a unique tool for the study of topological propertiesof theory. Experimental results obtained for discrete QCD symmetries at finitetemperatures are discussed. These results confirm indirectly the topologicallynon-trivial structure of the QCD vacuum. Most results obtained during phase-Iof the RHIC beam energy scan (BES) program show smooth behavior vs initialenergy. However, certain results suggest the transition in the domain ofdominance of hadronic degrees of freedom at center-of-mass energies between10-20 GeV. Future developments and more precise studies of features of the QCDphase diagram in the framework of phase-II of RHIC BES will be brieflydiscussed.
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