On the origin and movement of the poles in the coupled channels model for $\bar{K}N$ interactions

The origin of the poles generated by chiral coupled-channel dynamics and applied to $\bar{K}N$ interactions is related to the nonzero diagonal couplings in the $\pi \mathrm{\Sigma }$, $\bar{K}N$ and $K\mathrm{\Xi }$ channels. An evolution of the poles from the zero coupling limit and from a limit of restored SU(3) symmetry is discussed.