Plasma conductivity at finite coupling

Abstract

By taking into account the full order(α'^3) type IIB string theory corrections to the supergravity action, we compute the leading finite 't Hooft coupling order(λ^{-3/2}) corrections to the conductivity of strongly-coupled SU(N) {\cal {N}}=4 supersymmetric Yang-Mills plasma in the large N limit. We find that the conductivity is enhanced by the corrections, in agreement with the trend expected from previous perturbative weak-coupling computations.

19 pages

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