Wilsonian flows and background fields

Details Wilsonian flows and background fields Wilsonian flows and background fields

2002-08-29

arxiv.org/abs/hep-th/0208216v2

Phys.Lett. B546 (2002) 279-286

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, v2: references added. to appear in PLB

Scientific paper

10.1016/S0370-2693(02)02693-X

We study exact renormalisation group flows for background field dependent regularisations. It is shown that proper-time flows are approximations to exact background field flows for a specific class of regulators. We clarify the role of the implicit scale dependence introduced by the background field. Its impact on the flow is evaluated numerically for scalar theories at criticality for different approximations and regularisations. Implications for gauge theories are discussed.

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