Ward identity and electrical conductivity in hot QED

We study the Ward identity for the efiective 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 flnal expressions for the electrical conductivity at leading logarithmic order are not afiected.

• Publication year

  2002

• Venue

  Journal of High Energy Physics

• Publication date

  2002-09-04

• Fields of study

  Physics

• Identifiers
  DOI 10.1088/1126-6708/2002/11/022arXiv hep-ph/0209048
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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