Completing the framework of AdS/QCD: hn 1/bn 1 mesons and excited ω/ρ’s

摘要

We extend the “hard wall” gravity dual of QCD by including tensor fields b MN that correspond to the QCD quark bilinear operators ( bar{q}{sigma^{mu nu }}q ). These fields give rise to a spectrum of states which include the h 1 and b 1 mesons, as well as a tower of excited ω/ρ meson states. We also identify the lowest-dimension term which leads to mixing between the new ρ states and the usual tower of ρ mesons when chiral symmetry is broken.