Polymers At the O-point On Fractals - Results of Flory Approximations

We consider the problem of establishing Flory-like formulas for the nu-exponent of polymer chains on fractals. For the theta-regime the short-range screening of three-body interactions, together with scale-invariance arguments, is invoked, producing a Flory formula with very good results. We briefly consider the extension of such arguments to branched polymers at the theta point