Mamani, Luis A. H.
Miranda, Alex S.
Zanchin, Vilson T.
Total Authors: 5
 Univ Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz, 271 Bloco 2, BR-01140070 Sao Paulo, SP - Brazil
 Univ Fed Rio de Janeiro, Inst Fis, Caixa Postal 68528, BR-21941972 Rio De Janeiro - Brazil
 Univ Fed ABC, Ctr Ciencias Nat & Humanas, Rua Santa Adelia 166, BR-09210170 Sao Paulo - Brazil
 Univ Estadual Santa Cruz, Dept Ciencias Exatas & Tecnol, Lab Astrofis Teor & Observac, BR-45650000 Ilheus, BA - Brazil
Total Affiliations: 4
Physical Review D;
FEB 1 2018.
Web of Science Citations:
We investigate effective holographic models for QCD arising from five-dimensional dilaton gravity. The models are characterized by a dilaton with a mass term in the UV, dual to a CFT deformation by a relevant operator, and quadratic in the IR. The UV constraint leads to the explicit breaking of conformal symmetry, whereas the IR constraint guarantees linear confinement. We propose semianalytic interpolations between the UV and the IR and obtain a spectrum for scalar and tensor glueballs consistent with lattice QCD data. We use the glueball spectrum as a physical constraint to find the evolution of the model parameters as the mass term goes to 0. Finally, we reproduce the universal result for the trace anomaly of deformed CFTs and propose a dictionary between this result and the QCD trace anomaly. A nontrivial consequence of this dictionary is the emergence of a beta function similar to the two-loop perturbative QCD result. (AU)