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A New Class of Three Nucleon Forces and their Implications

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arxiv 2411.00097 v1 pith:HXDXKO7A submitted 2024-10-31 nucl-th astro-ph.HEhep-lathep-ph

classification nucl-thastro-ph.HEhep-lathep-ph
keywords forcesmatternuclearclassimplicationsneutronpionsthree-nucleon
verification ladder T0 review T1 audit T2 compute T3 formal
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We identify a new class of three-nucleon forces that arises in the low-energy effective theory of nuclear interactions including pions. We estimate their contribution to the energy of neutron and nuclear matter and find that it can be as important as the leading-order three-nucleon forces previously considered in the literature. The magnitude of this force is set by the strength of the coupling of pions to two nucleons and is presently not well constrained by experiments. The implications for nuclei, nuclear matter, and the equation of state of neutron matter are briefly discussed.

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Cited by 2 Pith papers

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    Neural quantum states plus minimum principles compute elastic and inelastic neutron-deuteron scattering observables with conservative uncertainties, without time evolution.

  2. Scrutiny of the new class of three-nucleon forces

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    After removing renormalization-scheme-dependent short-distance parts, the scrutinized three-nucleon forces yield small contributions to neutron and symmetric nuclear matter equations of state, aligning with standard c...

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