On the Ward Identities at Finite Temperature
classification
✦ hep-ph
hep-th
keywords
finitetemperatureidentitieswardassociatedcontrarycontributiondimensions
read the original abstract
We show both in 1+1 and 3+1 dimensions that, contrary to the recent suggestions, the contribution of the fermion loop to the polarization tensor is manifestly transverse at finite temperature. Some subtleties associated with the Ward identities at finite temperature are also pointed out.
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