High Energy Physics - Theory
[Submitted on 31 Mar 2015 (v1), last revised 6 Feb 2016 (this version, v3)]
Title:Some problems with reproducing the Standard Model fields and interactions in five-dimensional warped brane world models
View PDFAbstract:In the present paper we examine, from the purely theoretical point of view and in a model-independent way, the case, when matter, gauge and Higgs fields are allowed to propagate in the bulk of five-dimensional brane world models with compact extra dimension, and the Standard Model fields and their interactions are supposed to be reproduced by the corresponding zero Kaluza-Klein modes. An unexpected result is that in order to avoid possible pathological behavior in the fermion sector, it is necessary to impose constraints on the fermion field Lagrangian. In the case when the fermion zero modes are supposed to be localized at one of the branes, these constraints imply an additional relation between the vacuum profile of the Higgs field and the form of the background metric. Moreover, this relation between the vacuum profile of the Higgs field and the form of the background metric results in the exact reproduction of the gauge boson and fermion sectors of the Standard Model by the corresponding zero mode four-dimensional effective theory in all the physically relevant cases, allowed by the absence of pathologies. Meanwhile, deviations from these conditions can lead either back to pathological behavior in the fermion sector or to a variance between the resulting zero mode four-dimensional effective theory and the Standard Model, which, depending on the model at hand, may, in principle, result in constraints putting the theory out of the reach of the present day experiments.
Submission history
From: Mikhail Smolyakov [view email][v1] Tue, 31 Mar 2015 14:58:17 UTC (14 KB)
[v2] Thu, 8 Oct 2015 19:58:14 UTC (17 KB)
[v3] Sat, 6 Feb 2016 17:22:34 UTC (18 KB)
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