Correlated density-dependent chiral forces for infinite matter calculations within the Green's function approach
Abstract
The properties of symmetric nuclear and pure neutron matter are investigated within an extended self-consistent Green's function method that includes the effects of three-body forces. We use the ladder approximation for the study of infinite nuclear matter and incorporate the three-body interaction by means of a density-dependent two-body force. This force is obtained via a correlated average over the third particle, with an in-medium propagator consistent with the many-body calculation we perform. We analyze different prescriptions in the construction of the average and conclude that correlations provide small modifications at the level of the density-dependent force. Microscopic as well as bulk properties are studied, focusing on the changes introduced by the density dependent two-body force. The total energy of the system is obtained by means of a modified Galitskii-Migdal-Koltun sum rule. Our results validate previously used uncorrelated averages and extend the availability of chirally motivated forces to a larger density regime.
Keywords
Cite
@article{arxiv.1408.0717,
title = {Correlated density-dependent chiral forces for infinite matter calculations within the Green's function approach},
author = {Arianna Carbone and Arnau Rios and Artur Polls},
journal= {arXiv preprint arXiv:1408.0717},
year = {2014}
}
Comments
17 pages, 11 figures