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Phys. Rev. Lett. 95, 170602 (2005) [4 pages]

Harmonic Measure of Critical Curves

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E. Bettelheim, I. Rushkin, I. A. Gruzberg, and P. Wiegmann*
James Frank Institute, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637, USA

Received 20 July 2005; published 20 October 2005

Fractal geometry of critical curves appearing in 2D critical systems is characterized by their harmonic measure. For systems described by conformal field theories with central charge c≤1, scaling exponents of the harmonic measure have been computed by Duplantier [ Phys. Rev. Lett. 84 1363 (2000)] by relating the problem to boundary two-dimensional gravity. We present a simple argument connecting the harmonic measure of critical curves to operators obtained by fusion of primary fields and compute characteristics of the fractal geometry by means of regular methods of conformal field theory. The method is not limited to theories with c≤1.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.170602
DOI:
10.1103/PhysRevLett.95.170602
PACS:
05.50.+q, 05.45.Df, 11.25.Hf, 11.27.+d

*Also at Landau Institute of Theoretical Physics.