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Transport Coefficients at Leading Order: Kinetic Theory versus Diagrams

Guy D. Moore
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Abstract

I review what is required to compute transport coefficients in ultra-relativistic, weakly coupled gauge theories, at leading order in $g$, using kinetic theory. Then I discuss how the calculation would look in alternative approaches: the 2PI method, and direct diagrammatic analysis. I argue that the 2PI method may be a good way to derive the kinetic theory, but is not very useful directly (in a gauge theory). The diagrammatic approach is almost hopeless.

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Guy D. Moore. 2002-11-18. Transport Coefficients at Leading Order: Kinetic Theory versus Diagrams. https://doi.org/10.1142/9789812704498_0014

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