Kastening, Boris (1995)
New gauge for computing effective potentials in spontaneously broken gauge theories.
In: Physical Review D, 51 (1)
doi: 10.1103/PhysRevD.51.265
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A new class of renormalizable gauges is introduced that is particularly well suited to compute effective potentials in spontaneously broken gauge theories. It allows one to keep free gauge parameters when computing the efFective potential from vacuum graphs or tadpoles without encountering mixed propagators of would-be Goldstone bosons and longitudinal modes of the gauge 6eld. As an illustrative example several quantities are computed within the Abelian Higgs model, which is renormalized at the two-loop level. The zero temperature effective potential in the new gauge is compared to that in the Bg gauge at the one-loop level and not only found to be easier to compute but also to have a more convenient analytical structure. To demonstrate the renormalizability of the gauge for the non-Abelian case, the renormalization of an SU(2)-Higgs model with a completely broken gauge group and of an SO(3)-Higgs model with an unbroken SO(2) subgroup i's outlined and renormalization constants are given at the one-loop level.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1995 |
| Autor(en): | Kastening, Boris |
| Art des Eintrags: | Bibliographie |
| Titel: | New gauge for computing effective potentials in spontaneously broken gauge theories |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Januar 1995 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review D |
| Jahrgang/Volume einer Zeitschrift: | 51 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1103/PhysRevD.51.265 |
| Kurzbeschreibung (Abstract): | A new class of renormalizable gauges is introduced that is particularly well suited to compute effective potentials in spontaneously broken gauge theories. It allows one to keep free gauge parameters when computing the efFective potential from vacuum graphs or tadpoles without encountering mixed propagators of would-be Goldstone bosons and longitudinal modes of the gauge 6eld. As an illustrative example several quantities are computed within the Abelian Higgs model, which is renormalized at the two-loop level. The zero temperature effective potential in the new gauge is compared to that in the Bg gauge at the one-loop level and not only found to be easier to compute but also to have a more convenient analytical structure. To demonstrate the renormalizability of the gauge for the non-Abelian case, the renormalization of an SU(2)-Higgs model with a completely broken gauge group and of an SO(3)-Higgs model with an unbroken SO(2) subgroup i's outlined and renormalization constants are given at the one-loop level. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 04 Jan 2013 09:36 |
| Letzte Änderung: | 05 Mär 2013 10:04 |
| PPN: | |
| Sponsoren: | This work was supported by Stichting FOM. |
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