The problem of aggregation processes in alignments is the subject of a paper published in a Statistical Physics Journal (Physica A 230 (1996) 174-188). Two models are presented and discussed in that paper. First the energy landscape model proposed by Axelrod and Bennett (B. J. Pol. S. 23 (1993) 211-233) is analysed. The model is shown not to include most of its claimed results. Then a second model is presented to reformulate correctly the problem within statistical physics and to extend it beyond the initial Axelrod-Bennett analogy.
Categories: cond-mat.dis-nn adap-org cond-mat.stat-mech nlin.AO