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Four-nucleon force in chiral effective field theory

E. Epelbaum
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Abstract

We derive the leading contribution to the four-nucleon force within the framework of chiral effective field theory. It is governed by the exchange of pions and the lowest-order nucleon-nucleon contact interaction and includes effects due to the nonlinear pion-nucleon couplings and the pion self interactions constrained by the chiral symmetry of QCD. The resulting four-nucleon force does not contain any unknown parameters and can be tested in few- and many-nucleon studies.

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E. Epelbaum. 2005-11-07. Four-nucleon force in chiral effective field theory. https://doi.org/10.1016/j.physletb.2006.06.046

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