Regular Article - Theoretical Physics
Anomalous dimensions and scalar glueball spectroscopy in AdS/QCD
Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, RJ, 21941-972, Brazil
* e-mail: email@example.com
Revised: 3 July 2013
Published online: 3 September 2013
An extended version of the AdS/QCD soft-wall model that incorporates QCD-like anomalous contributions to the dimensions of gauge theory operators is proposed. This exploratory approach leads to a relation between scalar glueball masses and beta functions. Using this relation, the properties of the glueball mass spectroscopy that emerge from phenomenological beta functions proposed in the literature are investigated. The reverse problem is also considered: starting from a linear Regge trajectory which fits the lattice glueball masses, beta functions with different asymptotic infrared behaviors are found. Remarkably, some of them present a fixed point at finite coupling.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013