SU(2NF) symmetry of QCD at high temperature and its implications
Abstract
If above a critical temperature not only the SU(NF)L × SU(NF)R chiral symmetry of QCD but also the U(1)A symmetry is restored, then the actual symmetry of the QCD correlation functions and observables is SU(2NF). Such a symmetry prohibits existence of deconfined quarks and gluons. Hence QCD at high temperature is also in the confining regime and elementary objects are SU(2NF) symmetric "hadrons" with not yet known properties.
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