Hadronic aspects of exotic baryons
  In this talk I look into three different topics, addressing first the possibility that the $\Theta^+$ is a bound state of $K \pi N$, exploiting the results of this study to find out the contribution of two meson and one baryon components in the baryon antidecuplet and in the third place I present results on a new resonant exotic baryonic state which appears as dynamically generated by the Weinberg Tomozawa $\Delta K$ interaction. 
E. Oset, S. Sarkar, M.J. Vicente Vacas, V. Mateu, T. Hyodo, A. Hosaka   and F. J. Llanes-Estrada