Leading Order QED Electrical Conductivity from the 3PI Effective Action

Details Leading Order QED Electrical Conductivity from the 3PI Effective Action Leading Order QED Electrical Conductivity from the 3PI Effective Action

2007-09-05

arxiv.org/abs/0709.0706v1

Phys.Rev.D77:025015,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 15 figures

Scientific paper

10.1103/PhysRevD.77.025015

In this article we study the electrical conductivity in QED using the resummed 3PI effective action. We work to 3-loop order in the effective action. We show that the resulting expression for the conductivity is explicitly gauge invariant, and that the integral equations that resum the pinching and colinear contributions are produced naturally by the formalism. All leading order terms are included, without the need for any kind of power counting arguments.

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