Shell-model Monte Carlo studies of fp-shell nuclei.

We study the gross properties of even-even and N = Z nuclei with A = 48 64 using shell-model Monte Carlo methods. Our calculations account for all 0 h! con gurations in the fp-shell and employ the modi ed Kuo-Brown interaction KB3. We nd good agreement with data for masses and total B(E2) strengths, the latter employing e ective charges ep = 1:35e and en = 0:35e. The calculated total Gamow-Teller strengths agree consistently with the B(GT+)-values deduced from (n; p) data if the shell model results are renormalized by 0:64, as has already been established for sd-shell nuclei. The present calculations therefore suggest that this renormalization (i.e., gA = 1 in the nuclear medium) is universal. Typeset using REVTEX