Properties of 12C in the Ab Initio Nuclear Shell Model

We obtain properties of ¹²C in the ab initio no-core nuclear shell model. The effective Hamiltonians are derived microscopically from the realistic CD Bonn and the Argonne V8' nucleon-nucleon \(NN\) potentials as a function of the finite harmonic oscillator basis space. Binding energies, excitation spectra, and electromagnetic properties are presented for model spaces up to 5ħΩ. The favorable comparison with available data is a consequence of the underlying NN interaction rather than a phenomenological fit.