J. Phys. I France 1 (1991) 339-349
Polymers at the -point on fractals : results of Flory approximationsS. L. A. de Queiroz1, F. Seno2 and A. L. Stella3
1 Department of Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, G.B.
2 Dipartimento di Fisica dell'Università di Padova, Via Marzolo 8, I-35131 Padova, Italy
3 Dipartimento di Fisica dell'Università di Bologna, Via Irnerio 46, I-40126 Bologna, Italy
(Received 13 June 1990, revised 9 November 1990, accepted 26 November 1990)
We consider the problem of establishing Flory-like formulas for the -exponent of polymer chains on fractals. For the -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 -point.
© Les Editions de Physique 1991