  In this paper, we analyze the clustering of galaxies using a modified
Newtonian potential. This modification of the Newtonian potential occurs due to
the existence of extra dimensions in brane world models. We will analyze a
system of galaxies interacting with each other through this modified Newtonian
potential. The partition function for this system of galaxies will be
calculated, and this partition function will be used to calculate the free
energy of this system of galaxies. The entropy and the chemical potential for
this system will also be calculated. We will derive explicit expression for the
clustering parameter for this system. This parameter will determine the
behavior of this system, and we will be able to express various thermodynamic
quantities using this clustering parameter. Thus, we will be able to explicitly
analyze the effect that modifying the Newtonian potential can have on the
clustering of galaxies. We also analyze the effect of extra dimensions on the
two-point functions between galaxies.
