Conformal Fractal Geometry and Boundary Quantum Gravity

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dc.creatorDuplantier, Bertrand
dc.date2003-03-13
dc.date2003-03-14
dc.date.accessioned2026-07-07T06:28:59Z
dc.date.available2026-07-07T06:28:59Z
dc.descriptionThis article gives a comprehensive description of the fractal geometry of conformally-invariant (CI) scaling curves, in the plane or half-plane. It focuses on deriving critical exponents associated with interacting random paths, by exploiting an underlying quantum gravity (QG) structure, which uses KPZ maps relating exponents in the plane to those on a random lattice, i.e., in a fluctuating metric. This is applied to critical models, like O(N) and Potts models, and to the Stochastic Löwner Evolution (SLE). The multifractal (MF) function f(alpha, c) of the harmonic measure near any CI fractal boundary, is given as a function of the central charge c of the associated CFT. The Hausdorff dimensions D_{H} of a non-simple scaling curve or cluster hull, and D_{EP} of its external perimeter or frontier, are shown to obey the duality equation (D_{H}-1)(D_{EP}-1)=1/4, valid for any c. The universal mixed MF spectrum f(alpha,lambda;c) describing the local spiralling rate lambda and singularity exponent alpha of the potential near any CI scaling curve is given. The duality between simple and non-simple random paths is established via a symmetry of the KPZ quantum gravity map. An extended dual KPZ relation is introduced for the SLE_{kappa}, which commutes with the kappa to kappa'=16/kappa duality. This gives the SLE exponents from simple QG rules, established from the general structure of correlation functions of arbitrary interacting random sets on a random lattice.
dc.description118 pages, 36 figures, research review article. The first part (Sections 2-7) is an expanded version of J. Stat. Phys. 110, 691 (2003), cond-mat/0207743. The second part (sections 8-12 and appendices) focuses on SLE and quantum gravity, and on their various dualities, mirrored in that relating simple and non-simple paths. Finally, it offers detailed arguments leading to the quantum gravity approach to interacting random paths
dc.identifierhttps://arxiv.org/abs/math-ph/0303034
dc.identifierhttp://arxiv.org/abs/math-ph/0303034
dc.identifier{\it Fractal Geometry and Applications: A Jubilee of Benoît Mandelbrot} (M. L. Lapidus and M. van Frankenhuysen, eds.), Proc. Symposia Pure Math. vol. 72, Part 2, 365-482 (AMS, Providence, R.I., 2004)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/97885
dc.subjectMathematical Physics
dc.subjectStatistical Mechanics
dc.subjectHigh Energy Physics - Theory
dc.subjectProbability
dc.subject60D05
dc.titleConformal Fractal Geometry and Boundary Quantum Gravity
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