Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-09-20
Physics
Nuclear Physics
Nuclear Theory
14 pages, 4 figures. Typos corrected, some sections expanded with additional references
Scientific paper
We show several examples were the tensor interaction of the lowest order G matrix in a nucleus is too strong. The examples include the quadrupole moment of $^{6}$Li, the isosplitting of the lowest 0$^{-}$ states in $^{16}$O, the near vanishing Gamow-Teller matrix element in the weak decay of the J=0 T=1 state of $^{14}$O to the J=1 T=0 ground state of $^{14}$N, and the magnitude of the deformation of $^{12}$C. It would appear that we could get better results by decreasing the tensor interaction strength by about a factor of two. We then examine the simple estimates of Gerry Brown concerning second order tensor effects. We note that for the triplet even channel the combination of first and second order tensor does indeed yield an effective weaker tensor interaction and helps to get better agreement with experiment.
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