Restoration of QCD classical symmetries in excited hadrons

Details Restoration of QCD classical symmetries in excited hadrons Restoration of QCD classical symmetries in excited hadrons

2006-09-22

arxiv.org/abs/hep-ph/0609230v1

AIPConf.Proc.892:36-42,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pp. Plenary talk given at the Int. Conf. "Quark Confinement and the Hadron Spectrum VII", Ponta Delgada, Azores, September 2

Scientific paper

10.1063/1.2714344

Restoration of chiral and $U(1)_A$ symmetries in excited hadrons is reviewed. A connection of these restorations with the semiclassical regime in highly excited hadron is discussed. A solvable confining field-theoretical toy model that exhibits chiral restoration is presented. Implications of the string description of the highly excited hadrons that suggests an additional dynamical symmetry of the spectra on the top of $U(2)_L \times U(2)_R$ are presented.

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