One loop Volkov propagator in the Lorentz class of gauges
Date
2019-11Author
Lavelle, Martin
McMullan, David
Subject
QED Laser Loops Gauges
Metadata
Show full item recordAbstract
We calculate the ultraviolet divergences in a weak field expansion of the Volkov propagator. This is done for the full Lorentz class of gauges. The expected gauge invariance of the vacuum mass shift in each sideband is recovered. However, the renormalisation of the background induced mass shift is shown to be gauge dependent. In particular, we show that it vanishes in Landau gauge. We find that only in that gauge does the vacuum renormalisation remove all ultraviolet divergences.
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Publisher
Elsevier BV
Journal
Physics Letters B
Volume
798
Pagination
0-0
Number
135021
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