313 citations · 2k across the 83 of their papers we have counts for
5 papers · 1 filter
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…
Relativistic Faddeev approach to a non-local NJL model
Amir H. Rezaeian, Niels R. Walet, Michael C. Birse
The diquark and nucleon are studied in a non-local NJL model. We solve the relativistic Faddeev equation and compare the results with the ordinary NJL model. Although the model is…
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…
Linked-cluster Tamm-Dancoff Field Theory
Amir H. Rezaeian, Niels R. Walet
To solve the relativistic bound-state problem one needs to systematically and simultaneously decouple the high-energy from the low-energy modes and the many-body from the few-parti…
Towards a practical approach for self-consistent large amplitude collective motion
Daniel Almehed, Niels R. Walet
We investigate the use of an operatorial basis in a self-consistent theory of large amplitude collective motion. For the example of the pairing-plus-quadrupole model, which has bee…