Microscopically-constrained Fock energy density functionals from chiral effective field theory. I. Two-nucleon interactions

摘要: Abstract The density matrix expansion (DME) of Negele and Vautherin is a convenient tool to map finite-range physics associated with vacuum two- three-nucleon interactions into the form Skyrme-like energy functional (EDF) density-dependent couplings. In this work, we apply improved formulation DME proposed recently in arXiv:0910.4979 by Gebremariam et al. non-local Fock obtained from chiral effective field theory (EFT) two-nucleon (NN) at next-to-next-to-leading-order (N 2 LO). structure such that each coupling can be decomposed constant arising zero-range contact function universal long-range pion exchanges. This motivates new microscopically-guided Skyrme phenomenology where couplings underlying pion-exchange are added standard empirical functionals, density-independent parameters subsequently refit data. A link downloadable Mathematica notebook containing novel provided.