13 research outputs found
Analysis of clustering phenomena in ab initio approaches
An approach for explicit consideration of cluster effects in nuclear systems
and accurate ab initio calculations of cluster characteristics of nuclei is
devised. The essential block of the approach is a construction of a basis which
incorporates both conventional No-Core Shell Model wave functions and
translationally-invariant wave functions of various cluster channels. The
results of computations of the total binding energies of 8Be nucleus as well as
the spectroscopic factors of cluster channels (amount of clustering) are
presented. An unexpected fresh result of the rigorous study is that the
contribution of "non-clustered" components of the basis to the total binding
energy is great even in the typical cluster systems such as the discussed
nucleus