Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1998-04-06
"Nuclear Physics with Effective Field Theory", ed. by R. Seki, U. van Kolck, and M.J. Savage, (World Scientific, Singapore, 19
Physics
Nuclear Physics
Nuclear Theory
16 pages, latex, 7 figures -- Proceedings of "Workshop on Nuclear Physics with Effective Field Theory" -- sprocl.sty and epsfi
Scientific paper
Nuclear scales are discussed from the nuclear physics viewpoint. The conventional nuclear potential is characterized as a black box that interpolates nucleon-nucleon (NN) data, while being constrained by the best possible theoretical input. The latter consists of the longer-range parts of the NN force (e.g., OPEP, TPEP, the $\pi$-$\gamma$ force), which can be calculated using chiral perturbation theory and gauged using modern phase-shift analyses. The shorter-range parts of the force are effectively parameterized by moments of the interaction that are independent of the details of the force model, in analogy to chiral perturbation theory. Results of GFMC calculations in light nuclei are interpreted in terms of fundamental scales, which are in good agreement with expectations from chiral effective field theories. Problems with spin-orbit-type observables are noted.
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