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arXiv · 1102.4799

Subleading contributions to the three-nucleon contact interaction

L. Girlanda·A. Kievsky·M. Viviani
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Abstract

We obtain a minimal form of the two-derivative three-nucleon contact Lagrangian, by imposing all constraints deriving from discrete symmetries, Fierz identities and Poincare' covariance. The resulting interaction, depending on 13 unknown low-energy constants, leads to a three-nucleon potential which we give in a local form in configuration space. We also consider the leading (no-derivative) four-nucleon interaction and show that there exists only one independent operator.

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L. Girlanda, A. Kievsky, M. Viviani. 2011-02-23. Subleading contributions to the three-nucleon contact interaction. https://doi.org/10.1103/physrevc.84.014001

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