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Transport Coefficients at Leading Order: Kinetic Theory versus Diagrams | | Guy D. Moore
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18 Nov 2002 | | Subject: | hep-ph | | 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. | | Source: | arXiv, hep-ph/0211281 | | Services: | Forum | Review | PDF | Favorites | |
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