Nonlocal regularization and spontaneously broken abelian gauge theories for an arbitrary gauge parameter
نویسندگان
چکیده
منابع مشابه
Nonlocal Regularization for Non-abelian Gauge Theories for Arbitrary Gauge Parameter
We study the nonlocal regularization for the non-abelian gauge theories for an arbitrary value of the gauge parameter ξ. We show that the procedure for the nonlocalization of field theories established earlier by the original authors, when applied in that form to the Faddeev-Popov effective action in a linear gauge cannot lead to a ξ-independent result for the observables. We then show that an ...
متن کاملObservables and Gauge Fixing in Spontaneously Broken Gauge Theories
Gauge fixing and the observable fields for both abelian and non-abelian gauge theories with spontaneous breaking of gauge symmetry are studied. We explicitly show that it is possible to globally fix the gauge in the broken sector and hence construct physical fields even in the non-abelian theory. We predict that any high temperature restoration of gauge symmetry will be accompanied by a confini...
متن کاملNoncommutativity and Spontaneously Broken Gauge Theories
We examine the spontaneous symmetry breaking of gauge theories in the framework of noncommutative field theory. We consider a noncommutative U(2) Higgs model with matter in the adjoint representation, that is the simplest example of a noncom-mutative gauge theory that is both classically well-defined in R ξ gauges and has an interacting commutative limit. In the ungauged global limit, the quant...
متن کاملpropagators in spontaneously broken gauge theories
Contrary to common belief, the longitudinal vector meson and scalar meson propagators have very different forms in spontaneously broken gauge theories. We choose the Abelian-Higgs model as an example and show that the longitudinal vector meson and scalar meson propagators have double poles by an extensive use of the Ward-Takahashi identities. PACS numbers: 11.15.-q, 11.30.Qc, 12.15.-y Typeset u...
متن کاملInfrared regularization of non-Abelian gauge theories
Curci and Ferrari found a unique BRS-invariant action for non-Abelian gauge theories which includes a mass term for the gauge bosons. I analyze this action. While the BRS operator is not nilpotent, the Zinn-Justin equation generalizes in a simple way so that the renormalization of the theory is consistent with the infrared regularization provided by the mass—infrared singularities and ultraviol...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EPJ direct
سال: 2001
ISSN: 1435-3725
DOI: 10.1007/s1010501c0004