Transport coefficients in large Nf gauge theories with massive fermions

doi:10.1088/1126-6708/2005/03/074

Transport coefficients in large N_f gauge theories with massive fermions

Author

Gert Aarts ^1,2 and Jose M. Martínez Resco ^3,4

Affiliations

¹ Department of Physics, The Ohio State University, 174 West 18th Avenue, Columbus, OH 43210, U.S.A.
² Department of Physics, University of Wales Swansea, Singleton Park, Swansea, SA2 8PP, U.K.
³ Department of Physics, The Ohio State University, 174 West 18th Avenue, Columbus, OH 43210, U.S.A.
⁴ Department of Physics & Astronomy, Brandon University, Brandon, Manitoba R7A 6A9, Canada

E-mail

martinezrescoj@brandonu.ca

Journal

Journal of High Energy Physics Create an alert RSS this journal

Issue

Volume 2005, JHEP03(2005)

Citation

Gert Aarts and Jose M. Martínez Resco JHEP03(2005)074

doi: 10.1088/1126-6708/2005/03/074

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Abstract

We compute the shear viscosity and the electrical conductivity in gauge theories with massive fermions at leading order in the large N_f expansion. The calculation is organized using the 1/N_f expansion of the 2PI effective action to next-to-leading order. We show explicitly that the calculation is gauge fixing independent and consistent with the Ward identity. We find that these transport coefficients depend in a nontrivial manner on the coupling constant and fermion mass. For large mass, both the shear viscosity and the electrical conductivity go to zero.

Keywords