Regularisation Techniques for the Radiative Corrections of Wilson lines and Kaluza - Klein states
نویسنده
چکیده
Using an effective field theory framework we reconsider the problem of radiative corrections from compact dimensions to the 4D gauge couplings. We evaluate the general structure of one-loop contribution from Kaluza-Klein states to the 4D gauge couplings, in models with one-and two-dimensional orbifold compactifications. The calculation includes the additional effect of a non-vanishing constant gauge background (Wilson lines) which brings in important corrections. The one-loop corrections are computed in three regularisation schemes: dimensional regularisation (DR), Zeta-function regularisation (ZR) and proper-time cutoff regularisation (PT). The relations among the results obtained in these schemes are carefully addressed and extensive technical details are provided. With minimal re-definitions of the parameters involved, the quantitative results obtained can be applied to most orbifold compactifications with one or two compact dimensions. We mention a possible implication for the gauge couplings unification in such models.
منابع مشابه
Regularisation Techniques for the Radiative Corrections of the Kaluza - Klein states
Using an effective field theory framework we reconsider the problem of radiative corrections from compact dimensions to the 4D gauge couplings. We evaluate the general structure of one-loop contribution from Kaluza-Klein states to the 4D gauge couplings, in models with one-and two-dimensional orbifold compactifications. The calculation includes the additional effect of a non-vanishing constant ...
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