Matrix elements of random operators and discrete symmetry breaking in nuclei
It is shown that several effects are responsible for deviations of the intensity distributions from the Porter-Thomas law. Among these are genuine symmetry breaking, such as isospin, the nature of the transition operator, truncation of the Hilbert space in shell model calculations, and missing transitions.
Hussein
MS
Nuclear Theory and Elementary Particle Phenomenology Group, Departamento de Fisica Nuclear, Instituto de Fisica, Universidade de Sao Paulo, C.P. 66318, 05315-970 Sao Paulo, S.P., Brazil.
Pato
MP