Gert Aarts and Jose M. Martínez Resco JHEP11(2002)022 doi:10.1088/1126-6708/2002/11/022
Gert Aarts1 and Jose M. Martínez Resco1
Show affiliationsWe study the Ward identity for the effective photon-electron vertex summing the ladder diagrams contributing to the electrical conductivity in hot QED at leading logarithmic order. It is shown that the Ward identity requires the inclusion of a new diagram in the integral equation for the vertex that has not been considered before. The real part of this diagram is subleading and therefore the final expressions for the electrical conductivity at leading logarithmic order are not affected.
12.20.Ds Specific calculations
11.30.-j Symmetry and conservation laws
Issue 11 (November 2002)
Received 5 September 2002, accepted for publication 13 November 2002
Published 27 November 2002
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