Emergence of rotational bands in ab initio no-core configuration interaction calculations of the Be isotopes

The emergence of rotational bands is observed in no-core configuration interaction (NCCI) calculations for the Be isotopes (7 <= A <= 12), as evidenced by rotational patterns for excitation energies, electromagnetic moments, and electromagnetic transitions. Yrast and low-lying excited bands are found. The results indicate well-developed rotational structure in NCCI calculations, using the JISP16 realistic nucleon-nucleon interaction within finite, computationally accessible configuration spaces.