Developing a Hartree-Fock program, analyzing the results

Running the program, one finds that the lowest-lying states for a nucleus like \( {}^{16}\mbox{O} \), we see that the nucleon-nucleon force brings a natural spin-orbit splitting for the \( 0p \) states (or other states except the \( s \)-states). Since we are using the \( m \)-scheme for our calculations, we observe that there are several states with the same eigenvalues. The number of eigenvalues corresponds to the degeneracy \( 2j+1 \) and is well respected in our calculations, as see from the table here.

The values of the lowest-lying states are (\( \pi \) for protons and \( \nu \) for neutrons)

Quantum numbers Energy [MeV]
\( 0s_{1/2}^{\pi} \) -40.4602
\( 0s_{1/2}^{\pi} \) -40.4602
\( 0s_{1/2}^{\nu} \) -40.6426
\( 0s_{1/2}^{\nu} \) -40.6426
\( 0p_{1/2}^{\pi} \) -6.7133
\( 0p_{1/2}^{\pi} \) -6.7133
\( 0p_{1/2}^{\nu} \) -6.8403
\( 0p_{1/2}^{\nu} \) -6.8403
\( 0p_{3/2}^{\pi} \) -11.5886
\( 0p_{3/2}^{\pi} \) -11.5886
\( 0p_{3/2}^{\pi} \) -11.5886
\( 0p_{3/2}^{\pi} \) -11.5886
\( 0p_{3/2}^{\nu} \) -11.7201
\( 0p_{3/2}^{\nu} \) -11.7201
\( 0p_{3/2}^{\nu} \) -11.7201
\( 0p_{3/2}^{\nu} \) -11.7201
\( 0d_{5/2}^{\pi} \) 18.7589
\( 0d_{5/2}^{\nu} \) 18.8082