Symmetries and symmetry breaking patterns in QCD: chiral and deconfinement transitions

Details Symmetries and symmetry breaking patterns in QCD: chiral and deconfinement transitions Symmetries and symmetry breaking patterns in QCD: chiral and deconfinement transitions

2009-10-06

arxiv.org/abs/0910.0975v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 6 figures, to be publ. in Proc. 4th Int Symposium on Symmetries in Subatomic Physics (SSP2009), Taipei, Taiwan, June

Scientific paper

The symmetry breaking pattern of QCD features two seemingly disconnected phenomena: the spontaneous breakdown of the Z(3) center symmetry in the deconfinement transition of pure-gauge QCD, and the spontaneous breaking of chiral SU(N_f)xSU(N_f) symmetry in the limit of N_f massless quark flavours. The dynamical entanglement of these symmetries is displayed in the framework of a schematic model (the PNJL model) in comparison with results from Lattice QCD. Extensions to non-zero baryon chemical potential are discussed.

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