Abstract
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.
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Durrett, R., Schonmann, R.H. & Tanaka, N.I. Correlation lengths for oriented percolation. J Stat Phys 55, 965–979 (1989). https://doi.org/10.1007/BF01041074
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DOI: https://doi.org/10.1007/BF01041074