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Renormalisation group flows for gauge theories in axial gauges

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Gauge theories in axial gauges are studied using Exact Renormalisation Group flows. We introduce a background field in the infrared regulator, but not in the gauge fixing, in contrast to the usual background field gauge. We discuss the absence of spurious singularities and the finiteness of the flow...

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Bibliographic Details
Main Authors: Litim, Daniel F. (Author) , Pawlowski, Jan M. (Author)
Format: Article (Journal)
Language:English
Published: 14 October 2002
In: Journal of high energy physics
Year: 2002, Volume: 2002, Issue: 09
ISSN:1029-8479
DOI:10.1088/1126-6708/2002/09/049
Online Access:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1088/1126-6708/2002/09/049
Verlag, kostenfrei, Volltext: http://stacks.iop.org/1126-6708/2002/i=09/a=049
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Author Notes:Daniel F. Litim, Theory Division, CERN CH-1211 Geneva 23, Switzerland; Jan M. Pawlowski, Institut für Theoretische Physik III, Universittät Erlangen, D-91054 Erlangen, Germany
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Summary:Gauge theories in axial gauges are studied using Exact Renormalisation Group flows. We introduce a background field in the infrared regulator, but not in the gauge fixing, in contrast to the usual background field gauge. We discuss the absence of spurious singularities and the finiteness of the flow. It is shown how heat-kernel methods can be used to obtain approximate solutions to the flow and the corresponding Ward identities. New expansion schemes are discussed, which are not applicable in covariant gauges. As an application, we derive the one-loop effective action for covariantly constant field strength, and the one-loop β-function for arbitrary regulator.
Item Description:Gesehen am 06.12.2017
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1088/1126-6708/2002/09/049

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