English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We introduce a unified approach to nuclear bound and continuum states basedon the coupling of the no-core shell model (NCSM), a bound-state technique,with the no-core shell model/resonating group method (NCSM/RGM), a nuclearscattering technique. This new ab initio method, no-core shell model withcontinuum (NCSMC), leads to convergence properties superior to either NCSM orNCSM/RGM while providing a balanced approach to different classes of states. Inthe NCSMC, the ansatz for the many-nucleon wave function includes: i) asquare-integrable A-nucleon component expanded in a complete harmonicoscillator basis; ii) a binary-cluster component with asymptotic boundaryconditions that can properly describe weakly-bound states, resonances andscattering; and, in principle, iii) a three-cluster component suitable for thedescription of, e.g., Borromean halo nuclei and reactions with final three-bodystates. The Schroedinger equation is transformed into a system ofcoupled-channel integral-differential equations that we solve using a modifiedmicroscopic R-matrix formalism within a Lagrange mesh basis. We demonstrate theusefulness of the approach by investigating the unbound 7He nucleus.

Unified ab initio approach to bound and unbound states: no-core shell model with continuum and its application to 7He