Correlation lengths for oriented percolation
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Oriented percolation has two correlation lengths, one in the “space” and one in the “time” direction. In this paper we define these quantities for the two-dimensional model in terms of the exponential decay of suitably chosen quantities, and study the relationship between the various definitions. The definitions are used in a companion paper to prove inequalities between critical exponents.
Key wordsCorrelation lengths oriented percolation
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