Although the isoscalar (T = 0) nucleon pair forms a bound state in vacuum, it is not evident whether the isoscalar pair condensation exists in nuclei. We perform calculations of the transition density for two-nucleon removal modes, to study deuteron-like pair states with spin S = 1 and isospin T = 0 in 16O. The isoscalar proton-neutron (pn) pair states in the nucleus vary, depending on the strength of the isoscalar pn pairing interaction and on the location of the pair inside the nucleus.
Ochi et al. (Wed,) studied this question.