Corrections to Scaling in Random Resistor Networks and Diluted Continuous Spin Models near the Percolation Threshold

Details Corrections to Scaling in Random Resistor Networks and Diluted Continuous Spin Models near the Percolation Threshold Corrections to Scaling in Random Resistor Networks and Diluted Continuous Spin Models near the Percolation Threshold

2003-10-03

arxiv.org/abs/cond-mat/0310077v1

Phys. Rev. E 69, 026118 (2004)

Physics

Condensed Matter

Statistical Mechanics

18 pages, 2 figures

Scientific paper

10.1103/PhysRevE.69.026118

We investigate corrections to scaling induced by irrelevant operators in randomly diluted systems near the percolation threshold. The specific systems that we consider are the random resistor network and a class of continuous spin systems, such as the x-y-model. We focus on a family of least irrelevant operators and determine the corrections to scaling that originate from this family. Our field theoretic analysis carefully takes into account, that irrelevant operators mix under renormalization. It turns out that long standing results on corrections to scaling are respectively incorrect (random resistor networks) or incomplete (continuous spin systems).

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