Applying the Density Matrix Expansion with Coordinate-Space Chiral Interactions
Abstract
We apply the density matrix expansion (DME) at Hartree-Fock level with long-range chiral effective field theory interactions defined in coordinate space up to next-to-next-to-leading order. We consider chiral potentials both with and without explicit Delta isobars. The challenging algebra associated with applying the DME to three-nucleon forces is tamed using a new organization scheme, which will also facilitate generalizations. We include local regulators on the interactions to mitigate the effects of singular potentials on the DME couplings and simplify the optimization of generalized Skyrme-like functionals.
Cite
@article{arxiv.1611.03849,
title = {Applying the Density Matrix Expansion with Coordinate-Space Chiral Interactions},
author = {A. Dyhdalo and S. K. Bogner and R. J. Furnstahl},
journal= {arXiv preprint arXiv:1611.03849},
year = {2017}
}
Comments
52 pages, 6 figures. Two equations corrected. Mathematica notebooks used in derivations are bundled in the submission. Corresponds to published version