Hadrons and Multiquark States in Holographic QCD

We discuss hadrons and multiquark states in holographic QCD. This approach is based on an action which describes hadron structure with broken conformal and chiral invariance and incorporates confinement through the presence of a background dilaton field. According to the gauge/gravity duality the five-dimensional boson and fermion fields propagating in AdS space are dual to four-dimensional fields leaving on the surface of AdS sphere, which correspond to hadrons. In this picture hadronic wave functions --- basics blocks of hadronic properties --- are dual to the profiles of AdS fields in the fifth (holographic) dimension, which is identified with scale variable. As applications we consider properties of hadrons and multiquark states from unified point of view: mass spectrum, form factors, parton, transverse momentum, Wigner and Husimi distributions