The Quark-Gluon Plasma: Search for The Holy Grail
As everybody knows, the first step in the solution of a physics problem is to find the best set of variables. In particle physics these are often imagined to be quantized fields subject to various symmetry requirements. In QED one finds that photons and electrons suffice with little attention to other types of interactions. The edifices of chemistry and condensed matter physics are largely built out of QED using electrons and ions. In this case the most economical description is in terms of collective variables known as quasiparticles. The original coordinates: electrons and ions, are clumsy in comparison with the quasiparticles (for example, phonons, plasmons and almost free electrons in a metal).
KeywordsQuark Matter Mass Shell Inclusive Cross Section Nuclear Collision High Energy Collision
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