Meson-nucleus bound systems and low-energy QCD
Kenta Itahashi (RIKEN)

Non-perturbative nature of the QCD in the low energy region exhibits many interesting aspects, namely chiral symmetry breaking, non-trivial structure of vacuum, and so on. Spectroscopy of meson-nucleus bound systems provide precious information on the low-energy QCD in terms of partial restoration of the chiral symmetry in nuclear medium. We will discuss recent progress and future perspectives in the spectroscopy of pionic atoms and eta/eta’-mesic nuclei.