2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/203829Suggested 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.14 pages Latex/Revtex, with 3 postscript figures. New version adds a reference: text unchangedHigh Energy Physics - LatticeHigh Energy Physics - Theorytext