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Explicit Renormalization Group for D=2 Random Bond Ising Model with Long-Range Correlated Disorder

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Abstract

We investigate the explicit renormalization group for fermionic field theoretic representation of two-dimensional random bond Ising model with long-range correlated disorder. We show that a new fixed point appears by introducing a long-range correlated disorder. Such as the one has been observed in previous works for the bosonic (φ 4) description. We have calculated the correlation length exponent and the anomalous scaling dimension of fermionic fields at this fixed point. Our results are in agreement with the extended Harris criterion derived by Weinrib and Halperin.

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  1. Department of Physics, Sharif University of Technology, Tehran, 11365-9161, Iran

    M. A. Rajabpour & R. Sepehrinia

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  1. M. A. Rajabpour
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  2. R. Sepehrinia
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Correspondence to M. A. Rajabpour.

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Rajabpour, M.A., Sepehrinia, R. Explicit Renormalization Group for D=2 Random Bond Ising Model with Long-Range Correlated Disorder. J Stat Phys 130, 815–820 (2008). https://doi.org/10.1007/s10955-007-9443-5

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  • DOI: https://doi.org/10.1007/s10955-007-9443-5

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