Nowadays there are several well known models for liquids. Most of them use a potential of same type than the Lennard-Jones one: an attractive potential part stabilised by an infinite repulsive one. The use of such potentials are motivated by the fact that they describe well the interactions between pair of neutral atoms or molecules.
In this Master Thesis we studied a potential made of a repulsive and an attractive part, but the repulsive potential part was set as finite. This form of potential is closer to the one observed in domain of Soft Matter, for example for polymer coils or colloidal suspension stabilised by surfactant.
By using DFT we showed that our model with triplet interactions does give a stabile phase transition and we calculated inhomogeneous density profiles for different situations.