Infinite hierarchy of exponents in a two-component random resistor network |
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Authors: | Lucilla de Arcangelis Antonio Coniglio |
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Affiliation: | (1) Institute for Theoretical Physics, University of Cologne, 5000 Köln 41, West Germany;(2) Present address: Service de Physique Théorique, CEN, Saclay, 91191 Gif sur Yvette, France;(3) Dipartimento di Fisica, Università di Napoli, 80125 Napoli, Italy |
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Abstract: | We have studied the voltage distribution for a two-component random mixture of conductances a and b. A scaling theory is developed for the moments of the distribution, which predicts, for small values ofh= a/ b, an infinite number of crossover exponents, one for each moment, for Euclidean dimensiond >2, and only one crossover exponent ford=2. Monte Carlo results on the square lattice confirm this prediction. |
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Keywords: | Percolation two-component mixture scaling theory crossover exponent voltage distribution multifractality |
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