Three-point spectral density in QED and the ward identity at finite temperature

Authors
Hou, D Heinz, U
Citation
D. Hou et U. Heinz, Three-point spectral density in QED and the ward identity at finite temperature, EUR PHY J C, 7(1), 1999, pp. 101-106
Citations number
39
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL C
ISSN journal
14346044 → ACNP
Volume
7
Issue
1
Year of publication
1999
Pages
101 - 106
Database
ISI
SICI code
1434-6044(199902)7:1<101:TSDIQA>2.0.ZU;2-P
Abstract
We derive the spectral representations of QED 3-point functions and then ex plicitly calculate the 3-point spectral densities in hard thermal loop appr oximation within the real time formalism. The Ward identities obeyed by the retarded and advanced 2- and 3-point functions are discussed. We compare o ur results with those for hot QCD.