Nuclear forces with Δ excitations up to next-to-next-to-leading order, part I: Peripheral nucleon-nucleon waves

2007/03/27 by H. Krebs, Hermann Krebs, E. Epelbaum +2 · 141 citations
Physics and Astronomy · #Convergence (economics) #Effective field theory #Field theory (psychology) #Mathematical physics #Nuclear physics #Nuclear physics research studies #Nucleon #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #nucl-th

paper · pdf · doi:10.1140/epja/i2007-10372-y

published in The European Physical Journal A 32(2), 127-137 (Springer Science+Business Media) · 16 pages, 10 figures

arxiv created 2007/03/27 · openalex publication_date 2007/05/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We study the two-nucleon force at next-to-next-to-leading order in a chiral effective field theory with explicit Delta degrees of freedom. Fixing the appearing low-energy constants from a next-to-leading order calculation of pion-nucleon threshold parameters, we find an improved convergence of most peripheral nucleon-nucleon phases compared to the theory with pions and nucleons only. In the delta-full theory, the next-to-leading order corrections are dominant in most partial waves considered.

Citations

• Few-Nucleon Forces and Systems in Chiral Effective Field Theory
• Improving the convergence of the chiral expansion for nuclear forces - II: Low phases and the deuteron
• Meson production in nucleon?nucleon collisions close to the threshold
• Charge dependence of the nucleon-nucleon interaction

Cited by

• Isospin-breaking two-nucleon force with explicit Δ excitations
• Accurate bulk properties of nuclei from A=2 to ∞ from potentials with Δ isobars
• Nuclear Forces and Their Impact on Neutron-Rich Nuclei and Neutron-Rich Matter