A Generalized Continuous Model for Random Markets

In the last years, different techniques and models from statistical physics are being successfully applied to explain some real data observed in economy [1]. Concretely, it has been reported that western (capitalistic) economies can be divided into two distinct groups according to the incomes of people [2]. The 95% of the population, the middle and lower economic classes of society, arranges their incomes in an exponential wealth distribution. The incomes of the rest of the population, the 5% of individuals, fit a power law distribution.