Minimally non-local nucleon-nucleon potentials with chiral two-pion exchange including Δ’s
Department of Physics, Old Dominion University, Norfolk, VA 23529, USA
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Published online: 25 March 2016
A coordinate-space nucleon-nucleon potential is constructed in chiral effective field theory (χEFT) retaining pions, nucleons and Δ-isobars as explicit degrees of freedom. The calculation of the potential is carried out by including one- and two-pionexchange contributions up to next-to-next-to-leading order (N2LO) and contact interactions up to next-to-next-to-next-to-leading order (N3LO). The low-energy constants multiplying these contact interactions are fitted to the 2013 Granada database in the laboratory-energy range 0–300 MeV.
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