The projected generator coordinate method as a versatile tool for nuclear structure calculations

by Prof. Tomas Raul Rodriguez Frutos (Universidad complutense de Madrid)

Tuesday 20 Dec 2022, 11:30 → 13:30 Europe/Rome

C. Villi meeting room

The Generator Coordinate Method (GCM) provides a general framework to give variational solutions to the many-body problem. It is based on the definition of the variational trial wave functions as the linear mixing of different intrinsic configurations defined along the so-called generating coordinates. This beyond-mean-field method can give ground and excitation energies, decay probabilities, and interpretations of the results in terms of collective and single-particle degrees of freedom. In nuclear physics, the most common (and involved) realizations of the GCM formalism nowadays is the mixing of symmetry-restored (particle-number, parity and angular momentum projected) intrinsic quasi-particle states obtained from self-consistent mean-field calculations, the so-called Projected-GCM (PGCM).
 
In this seminar I will present some technical aspects of the PGCM method related to the proper orthogonalization of the original set of states used to defined the trial wave functions. In addition, I will show some recent results obtained with the PGCM method that can be compared with experimental data (shape evolution/coexistence/mixing in atomic nuclei, weak decays nuclear matrix elements, etc.).

Link zoom:

https://cern.zoom.us/j/2562789568?pwd=R2plRElHZU5iWjRZQUdjTXV6Mmt0Zz09

Meeting ID: 256 278 9568

Passcode: 178538