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The problem of the near vanishing of the Gamow-Teller transition ($GT$) inthe A=14 system between the lowest $J=0^+~ T=1$ and $J=1^+~ T=0$ states isrevisited. The model space is extended from the valence space $(p^{-2})$ to thevalence space plus all 2$\hbar \omega$ excitations. The question is addressedas to what features of the effective nucleon-nucleon interaction in the mediumare required to obtain the vanishing $GT$ strength in this extended space. Itturns out that a combination of a realistic strength of the tensor forcecombined with a spin-orbit interaction which is enhanced as compared to thefree interaction yields a vanishing $GT$ strength. Such an interaction can bederived from a microscopic meson exchange potential if the enhancement of thesmall component of the Dirac spinors for the nucleons is taken into account.Comment: RevTex file, 7 pages, four postscript figures. submitted to Phys.  Rev. C as a brief repor

physical review. c. nuclear physics/physical review. c, nuclear physics

Vanishing Gamow-Teller transition rate for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>A</mml:mi><mml:mo>=</mml:mo><mml:mn>14</mml:mn><mml:mn /></mml:math>and the nucleon-nucleon interaction in the medium

Vanishing Gamow-Teller transition rate forA=14and the nucleon-nucleon interaction in the medium