A Holographic QCD and Excited Baryons from String Theory

Understand

We study baryons of arbitrary isospin in a stringy holographic QCD model.

• In this D4-D8 holographic setting, the flavor symmetry is promoted to a gauge symmetry in the bulk, and produces, as KK modes of the gauge field, pions and spin one mesons of low energy QCD.
• Baryons of arbitrary isospins are represented as instanton solitons with isospin and spin quantum numbers locked, in a manner similar to the Skyrmion model.
• The soliton picture leads to a natural effective field theory of arbitrary baryons interacting with mesons.