  Finite-temperature Hartree-Fock-Bogoliubov theory using Skyrme interactions
and Relativistic Hartree-Fock effective Lagrangians, predicts $^{48}$Ni as
being a possible candidate for the finite temperature pairing re-entrance
phenomenon. For this proton-drip-line nucleus, proton resonant states are
expected to contribute substantially to pairing correlations and the two
predicted critical temperatures are $T_{c1}\sim 0.08-0.2$~MeV and $T_{c2}\sim
0.7-0.9$~MeV. It is also shown that pairing re-entrance modifies the proton
single particle energies around the Fermi level, as well as occupation numbers,
and quasi-particle levels. The understanding of pairing re-entrance in
$^{48}$Ni presently challenge our understanding of exotic matter under extreme
conditions.
