Perturbative Ward identity in finite-temperature quantum electrodynamics
- Department of Physics, Meijo University, Nagoya 468 (Japan)
The Ward identity (zero momentum transfer) is examined up to two loop order in finite-temperature quantum electrodynamics. It is shown that, to one loop order, zero momentum transfer limits of the vertex part have different limit values depending on the approach and the Ward identity does not hold in the spacelike limit; to two loop order, the vertex part diverges (simple pole) in the limit and the Ward identity does not hold.
- OSTI ID:
- 69571
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 2 Vol. 52; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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