CORRELATIONS BETWEEN CONDITIONAL MOMENTS MIGHT NOT NECESSARILY IMPLY EVIDENCE OF A PHASE-TRANSITION IN A DISASSEMBLY OF HOT NUCLEI

We devise two simple examples for the disassembly of hot nuclei: one u ses a direct Monte Carlo method based on the atomic mass table and mas s (charge) conservation; the other is a complete partition method base d upon charge conservation only. Although the former is not physically complete and the latter is nearly a pure algebraic model, they give a qualitative correlation between the conditional moments of fragment c harge distribution in experimental disassembly of Au- and fragment ma ss distribution in the percolation model. The results seem to indicate that it might be dangerous to regard the correlations of conditional moments as evidence of existing phase transitions.