8 papers
Shape mixing in the A 70 region
Daniel Almehed, Niels R. Walet
We investigate the mixing of different shapes in the A~70 region using the adiabatic self-consistent collective method in a rotating nuclei. The calculation is done for 68^Se and 7…
Description of resonances in light nuclei using a microscopic cluster model
Theodoros Leontiou, Niels R. Walet
We investigate resonances in light halo nuclei using a fully microscopic cluster model and the complex scaling method. We make use of the hermitian representation of the complex sc…
Oblate-prolate shape coexistence at finite angular momentum
Daniel Almehed, Niels R. Walet
We investigate shape coexistence in a rotating nucleus. We concentrate on the interesting case of 72-Kr which exhibits an interesting interplay between prolate and oblate states as…
Coupled-cluster renormalization group
Amir H. Rezaeian, Niels R. Walet
The coupled cluster method (CCM) is one of the most successful and universally applicable techniques in quantum many-body theory. The intrinsic nonlinear and non-perturbative natur…
The unreasonable accuracy of the Jastrow approach in many-body physics
Niels R. Walet, R. F. Bishop
We investigate in a simple model whether a Jastrow-based approach for a many-body system containing two-body interactions can be exact. By comparison with recent assertions to the…
Soliton Systems at Finite Temperatures and Finite Densities
Oliver Schwindt, Niels R. Walet
The finite-density and finite-temperature phase portraits of the baby-Skyrme and Skyrme models are investigated. Both grand-canonical and canonical approaches are employed. The gra…