The leading three-pion exchange nucleon-nucleon potential is scheme dependent, and this paper provides the version consistent with the method of unitary transformation, which differs from Kaiser's S-matrix results for three classes of diagrams.
Isospin dependence of the three-nucleon force
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abstract
We classify $A$--nucleon forces according to their isospin dependence and discuss the most general isospin structure of the three--nucleon force. We derive the leading and subleading isospin--breaking corrections to the three--nucleon force using the framework of chiral effective field theory.
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Chiral $3\pi$-exchange potential using the method of unitary transformation
The leading three-pion exchange nucleon-nucleon potential is scheme dependent, and this paper provides the version consistent with the method of unitary transformation, which differs from Kaiser's S-matrix results for three classes of diagrams.