Swedish Nuclear Physicist's Meeting 2021

Beyond mean field calculations by mapping EDF's to an effectiv Hamiltonian

28 Oct 2021, 16:40

20m

Department of Physics, GD-Lecture Hall (Chalmers University of Technology)

Contributed Talk Thursday

Speaker

Jimmy Ljungberg

Description

One powerful technique to go beyond the mean field calculations is the generator coordinate method (GCM). This method incorporate correlations between mean field configurations. However, using an energy density functional (EDF), which is density dependent, for the interaction will make the mixing of states not well defined. Also, the existing methods for the mixing can lead to singularities.

To solve those issues, we present a method to map EDF's to an effective Hamiltonian. This can be used in the GCM in a straightforward way without the risk of running into singularities.