Orateur
Dr
Christian Forssén
(Chalmers University of Technology)
Description
The ab initio no-core shell model (NCSM) is a well-established theoretical framework aimed at an exact description of nuclear structure starting from high precision interactions between the nucleons [1,2].
The principal foundation of the method is the use of effective interactions appropriate for the large, but finite, harmonic-oscillator model spaces employed in the calculations. These effective interactions are derived from the underlying realistic inter-nucleon potentials by a unitary transformation in a way that guarantees convergence to the exact solution as the basis size increases. We will exemplify the performance of the NCSM within nuclear physics by showing recent results from studies of p-shell nuclei. We will also demonstrate the recent adaption of the effective-interaction approach to the many-boson problem [3]. Finally, we will outline an extension of the NCSM formalism to achieve an ab initio description of open quantum systems and nuclear reactions by employing techniques from the Resonating Group Method (RGM) [4].
[1] P. Navratil, J. P. Vary, and B. R. Barrett, Phys. Rev. Lett. 84 (2000) 5728.
[2] P. Navratil, J. P. Vary, and B. R. Barrett, Phys. Rev. C 62 (2000) 054311.
[3] J. Christensson, C. Forssén, S. Åberg, and S. M. Reimann, arXiv:0802.2811v1.
[4] S. Quaglioni, and P. Navratil, Phys. Rev. Lett. (in press).
Auteur principal
Dr
Christian Forssén
(Chalmers University of Technology)
Co-auteurs
J. Christensson
(Lund University)
J. Vary
(Iowa State University)
P. Navrátil
(Lawrence Livermore National Laboratory)
S. Reimann
(Lund University)
S. Åberg
(Lund University)
