Transport coefficients and the 2pi effective action in the large N limit

We discuss the computation of transport coefficients in large N_f QCD and the O(N) model for massive particles. The calculation is organized using the 1/N expansion of the 2PI effective action to next-to-leading order. For the gauge theory, we verify gauge fixing independence and consistency with the Ward identity. In the gauge theory, we find a nontrivial dependence on the fermion mass.

Note:

10 pages, based on presentations at Strong and Electroweak Matter (SEWM04), Helsinki, Finland, June 16-19 2004, and the Workshop on QCD in Extreme Environments, Argonne National Laboratory, USA, June 29-July 3 2004

talk: Argonne 2004/06/29
talk: Helsinki 2004/06/16
quantum chromodynamics
expansion 1/N
symmetry: O(N)
effective action
transport theory
Ward identity
gauge fixing
numerical calculations: variational

References(38)

Figures(12)

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Derek Teaney
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Azwinndini Muronga
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Dirk H. Rischke
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e-Print:
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Juergen Berges
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Bogdan Mihaila
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Juergen Berges
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Juergen Berges
(
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Julien Serreau
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Bogdan Mihaila
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e-Print:
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D.J. Bedingham
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Takashi Ikeda
(
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DOI:
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