From Quark Gluon Plasma to a Perfect Fluid of Quarks and Beyond

With high energy heavy ion collisions one tries to create a new forms of matter that is similar to the one present at the birth of our Universe. Recent development on flow pattern, initial energy-density and freeze-out temperature shows that most likely this new form of matter is in a deconfined state, has colored degrees of freedom and is more fluid-like than gas-like. In present paper we calculate estimations on the physical properties of this new-old matter. “We simply do not yet know enough about the physics of elementary particles to be able to calculate the properties of such a melange with any confidence. ...Thus our ignorance of microscopic physics stands as a veil, obscuring our view of the very beginning.”