Some General Features of the Fluids under Consideration

Some General Features of the Fluids under Consideration 

All the fluids we shall consider here have several inlportant features in common, which dictate our notation and our formalism as well as certain general aspects of the techniques we shall describe. To begin with, all the fluids are composed of particles such that the pair potential 0(12) between a particle centered at ri and a particle centered at ra can be expressed as the sum of a 

The equilibrium statistical mechanics of the fluids can be discussed in terms of the n-particle probability density function p(l 2 n) associated with finding a particle centered at ri with orientation o i, another particle at t2 with orientation 02, etc. we shall in addition often work with the nondimensional functions 

In a fluid one has no preferred orientation so that in the absence of an external field 

The function g(r) is sometimes called the radial distribution function. 

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