Resistance to Collapse: The Tensor Interaction

Abstract

We consider negative-parity excitations in ${}^4\text{mbox}He$, $J^{\pi }$=$0^{-}$ and $1^{-}$ with isospin $T$=$0$ and $T$=$1$. We show tha t, in contrast to one-particle one-hole results, in a shell model diagonalization none of the above collapses to zero energy as the strength of the tensor interaction is increased.

Comments: 7 pages, latex file, 1 figure (available upon request), RU9407