Displacement operator formalism for renormalization and gauge dependence to all orders
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Displacement operator formalism for renormalization and gauge dependence to all orders

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Displacement operator formalism for renormalization and gauge dependence to all orders

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dc.contributor.author Binosi, Daniele
dc.contributor.author Papavassiliou, Joannis
dc.contributor.author Pilaftsis, Apostolos
dc.date.accessioned 2015-04-20T12:26:52Z
dc.date.available 2015-04-20T12:26:52Z
dc.date.issued 2005
dc.identifier.uri http://hdl.handle.net/10550/43246
dc.description.abstract We present a new method for determining the renormalization of Green functions to all orders in perturbation theory, which we call the displacement operator formalism, or the D-formalism, in short. This formalism exploits the fact that the renormalized Green functions may be calculated by displacing by an infinite amount the renormalized fields and parameters of the theory with respect to the unrenormalized ones. With the help of this formalism, we are able to obtain the precise form of the deformations induced to the Nielsen identities after renormalization, and thus derive the exact dependence of the renormalized Green functions on the renormalized gauge-fixing parameter to all orders. As a particular non-trivial example, we calculate the gauge-dependence of tanβ at two loops in the framework of an Abelian Higgs model, using a gauge-fixing scheme that preserves the Higgs-boson low-energy theorem for off-shell Green functions. Various possible applications and future directions are briefly discussed.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2005, vol. 71, num. 8, p. 085007
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Binosi, Daniele Papavassiliou, Joannis Pilaftsis, Apostolos 2005 Displacement operator formalism for renormalization and gauge dependence to all orders Physical Review D 71 8 085007
dc.subject Física
dc.title Displacement operator formalism for renormalization and gauge dependence to all orders
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-04-20T12:26:52Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevD.71.085007
dc.identifier.idgrec 026158

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