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Transport coefficients in large N_f gauge theories with massive fermions

Gert Aarts·Jose M. Martinez Resco
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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.

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Gert Aarts, Jose M. Martinez Resco. 2005-04-15. Transport coefficients in large N_f gauge theories with massive fermions. https://doi.org/10.1088/1126-6708%2F2005%2F03%2F074

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