Becciolini, DiegoRedi, MicheleWulzer, Andrea2010-09-242010-09-242010-09-24201010.1007/JHEP01(2010)074https://infoscience.epfl.ch/handle/20.500.14299/54114WOS:000273959700001We investigate the relevance of the metric and of the geometry in five-dimensional models of hadrons. Generically, the metric does not affect strongly the results and even flat space agrees reasonably well with the data. Nevertheless, we observe a preference for a decreasing warp factor, for example AdS space. The Sakai-Sugimoto model reduces to one of these models and the level of agreement is similar to the one of flat space. We also consider the discrete version of the five-dimensional models, obtained by dimensional deconstruction. We. find that essentially all the relevant features of "holographic" models of QCD can be reproduced with a simple 3-site model describing only the states below the cut-off of the theory.AdS-CFT CorrespondenceQcdConfinement1/N ExpansionChiral Perturbation-TheoryHidden Local SymmetryHolographic QcdCurrent-AlgebraGauge BosonMesonPhysicsDecaysMasstext::journal::journal article::research article