Abstract:We study the transport properties of directed percolation clusters at the upper critical dimension dc = 4 + 1, where critical fluctuations induce logarithmic corrections to the leading (mean-field) scaling behavior. Employing field theory and renormalization group methods we calculate these logarithmic corrections up to and including the next to leading correction for a variety of observables, viz. the connectivity, i.e., the probability that two given points are connected, the average twopoint resistance and … Show more
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