The image interaction and two-body bound state based on chiral dynamics

The interaction of image with a nucleon is studied from the viewpoint of chiral dynamics. We construct the coordinate space image potential in the meson-exchange picture, which serves as a fundamental ingredient for the study of the few-body nuclear systems with a image, the image-hypernuclei. The coupling constants concerning image are determined based on the chiral unitary model picture for the meson–baryon scattering where image is described as a superposition of two resonance poles. Solving the coupled-channel two-body image system, we find the higher energy image state develops an s-wave quasi-bound state slightly below the threshold in the total spin image channel, which acquires a finite width through the coupling to the lower energy image channel. We show important roles of the image exchange contribution to the image potential.