Separating the scales of confinement and chiral-symmetry breaking in lattice QCD with fundamental quarks
arXiv:0805.4627 · doi:10.1103/PhysRevD.78.054512
Abstract
Suggested holographic duals of QCD, based on AdS/CFT duality, predict that one should be able to vary the scales of colour confinement and chiral-symmetry breaking independently. Furthermore they suggest that such independent variation of scales can be achieved by the inclusion of extra 4-fermion interactions in QCD. We simulate lattice QCD with such extra 4-fermion terms at finite temperatures and show that for strong enough 4-fermion couplings the deconfinement transition occurs at a lower temperature than the chiral-symmetry restoration transition. Moreover the separation of these transitions depends on the size of the 4-fermion coupling, confirming the predictions from the proposed holographic dual of QCD.
arXiv comment14 pages Latex/Revtex, with 3 postscript figures. New version adds a reference: text unchanged
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