Extended Data Fig. 7: Impact of three body forces and correlations on N2LO k-r consistency.
From: Many-body factorization and position–momentum equivalence of nuclear short-range correlations
Ratios of coordinate-space to momentum-space pn (a) and pp (b) contact terms in 3H and 3He for the N2LO(1.0fm) interaction. The contact values for 3H in the spin-0 pp panel corresponds to the spin-0 nn values, as there are no pp pairs in this nucleus. V2+V3 refers to calculations employing the full 2+3-body Hamiltonian, while results labelled as V2 are obtained turning off the 3-body potential. The second part of the labels refers instead to different wave functions, obtained by optimizing different correlations for the given V2+V3 or V2 Hamiltonian: 2b+3b for the full 2+3-body correlations; 2b2+3b for the full 2+3-body correlations, where more sophisticated 2b correlations are used (see ref. 20); 2b for 2-body correlations only; 2b* for 2-body correlations only, obtained by turning off the 3-body correlations of the 2b+3b wave function (no re-optimization).
