Journal
PHYSICAL REVIEW C
Volume 92, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.92.024002
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Funding
- DFG
- NSFC [CRC110]
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The nucleon-nucleon interaction arising from the exchange of three pions and the excitation of Delta(1232) isobars in intermediate states is studied. Approximating the Delta propagator by the inverse Delta N mass-splitting, analytical expressions are derived for the spectral functions of the isoscalar and isovector central, spin-spin, and tensor N N potentials in momentum-space. A translation of the spectral functions into coordinate-space potentials reveals that the main effect of these specific exchange and excitation mechanisms is a repulsive isoscalar central N N potential.
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