Blends, dense binary

Field theoretical simulations [74,75,80] avoid any saddle point approximation and provide a formally exact solution of the standard model of the self-consistent field theory. To this end one has to deal with a complex free energy functional as a fimction of the composition and density. This significantly increases the computational complexity. Moreover, for certain parameter regions, it is very difficult to obtain reliable results due to the sign problem that a complex weight imparts onto thermodynamical averages [80]. We have illustrated that for a dense binary blend the results of the field theoretical simulations and the EP theory agree quantitatively, i.e., density and composi-... 

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