Speaker
Description
In this talk, we will present our work at the interface between density functional theory (DFT) and ab initio theory. In particular, we will focus on infinite nuclear matter, that we simulate using a description based on a finite number of nucleons, and discuss three research directions:
1. a new ab initio Self-consistent Green's function (SCGF) approach, based on the algebraic diagrammatic construction (ADC) approximation scheme that has proved successful in finite nuclei, is applied to determine the equation of state (EOS) of nuclear matter using chiral interactions [1];
2. we go beyond homogeneous matter, and present results for nuclear matter perturbed by an external static potential, the so-called static response problem [2], within the DFT method [3] and, at a preliminary level, within Quantum Monte Carlo;
3. finally, we present our program aimed at the construction of ab initio-based energy density functionals (EDFs) [4], and discuss how the static response offers in principle the possibility to gain information on the surface terms of the EDF ab initio.
References:
[1] C. Barbieri and A. Carbone, Lect. Notes Phys. 936, 571 (2017)
[2] M. Buraczynski et al., Physics Letters B 818, 136347 (2021)
[3] F. Marino et al., Phys. Rev C. 107, 044311 (2023)
[4] F. Marino et al., Phys. Rev. C 104, 024315 (2021)
