Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2008-05-29
Phys.Rev.D78:054512,2008
Physics
High Energy Physics
High Energy Physics - Lattice
14 pages Latex/Revtex, with 3 postscript figures. New version adds a reference: text unchanged
Scientific paper
10.1103/PhysRevD.78.054512
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.
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