Pentaquarks, Skyrmions and the Vector Manifestation of Chiral Symmetry

The structure of the pentaquark baryon ${\mathrm{\Theta }}^{+}$ is discussed in terms of a $K^{+}$-skyrmion binding where the skyrmion arises as a soliton in hidden local symmetry approach to low-energy hadronic physics which may be considered as a holographic dual to QCD. The “vector manifestation” of chiral symmetry encoded in the effective theory Wilsonian-matched to QCD is proposed to play an important role in the binding. Among the options available for understanding the pentaquark structure is the intriguing possibility that the ${\mathrm{\Theta }}^{+}$ is a Feshbach resonance generated by the solitonic matter that drives the Wess-Zumino term that in the presence of $K^{\star }$ acts like a magnetic field.