Two-dimensional Copolymers and Multifractality: Comparing Perturbative Expansions, MC Simulations, and Exact Results

We analyze the scaling laws for a set of two different species of long flexible polymer chains joined together at one of their extremities (copolymer stars) in space dimension D=2. We use a formerly constructed field-theoretic description and compare our perturbative results for the scaling exponents with recent conjectures for exact conformal scaling dimensions derived by a conformal invariance technique in the context of D=2 quantum gravity. A simple MC simulation brings about reasonable agreement with both approaches. We analyse the remarkable multifractal properties of the spectrum of scaling exponents.Comment: 5 page

Review of: The Ethics of Reproductive Technology (Kenneth D. Alpern ed., Oxford University Press 1992)

Review of: The Ethics of Reproductive Technology (Kenneth D. Alpern ed., Oxford University Press 1992). Additional readings, glossary, introduction, notes, preface. LC 92-8252; ISBN 0-19-507435-1. [370 pp. Paper $19.95. 200 Madison Avenue, New York NY 10016.