Nucleon-Nucleon Potential: Drift Effects

Abstract

In the rest frame of a many-body system, used in the calculation of its static and scattering properties, the center of mass of a two-body subsystem is allowed to drift. We show, in a model independent way, that drift corrections to the nucleon-nucleon potential are relatively large and arise from both one- and two-pion exchange processes. As far as chiral symmetry is concerned, corrections to these processes begin respectively at $\cO(q^2)$ and $\cO(q^4)$. The two-pion exchange interaction also yields a new spin structure, that promotes the presence of $P$ waves in trinuclei and is associated with profile functions which do not coincide with neither central nor spin-orbit ones. In principle, the new spin terms should be smaller than the $\cO(q^3)$ spin-orbit components. However, in the isospin even channel, a large contribution reverts this expectation and gives rise to the prediction of important drift effects.

To appear in Phys. Rev. C

References in corpus (2)

• Two-pion exchange nucleon-nucleon potential:O(q^4) relativistic chiral expansion
• Relativistic $O(q^4)$ two-pion exchange nucleon-nucleon potential: configuration space

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• Two-pion exchange three-nucleon potential: O(q^4) chiral expansion
• Nuclear forces from chiral EFT: The unfinished business
• Bakamjian-Thomas mass operator for the few-nucleon system from chiral dynamics
• Two and Three Nucleon Forces
• Nuclear Interactions: The Chiral Picture