ENHANCEMENT OF SYMMETRY VIOLATION IN A CHAOTIC SYSTEM

Enhancement of parity violation effects are calculated in an extended shell model space. Strong enhancements in the longitudinal asymmetry a re found when the nucleus is in a regime of large density of states an d when nuclear states are very complicated exhibiting features of comp lete mixing characteristic of the chaotic stage. The nature and mechan ism of the enhancement are discussed and compared with parity violatio n effects found at the single-particle stage. The universality of this effect for a wider class of symmetries and symmetry breakings as well as for a large class of complex systems is mentioned.