Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-01-04
Nucl.Phys. B710 (2005) 255-308
Physics
High Energy Physics
High Energy Physics - Theory
57 pages,10 figures, final version 2
Scientific paper
10.1016/j.nuclphysb.2004.12.023
The quantum dynamics of a bulk-boundary theory is closely examined by the use of the background field method. As an example we take the Mirabelli-Peskin model, which is composed of 5D super Yang-Mills (bulk) and 4D Wess-Zumino (boundary). Singular interaction terms play an important role of canceling the divergences coming from the KK-mode sum. Some new regularization of the momentum integral is proposed. An interesting background configuration of scalar fields is found. It is a localized solution of the field equation. In this process of the vacuum search, we present a new treatment of the vacuum with respect to the extra coordinate. The "supersymmetric" effective potential is obtained at the 1-loop full (w.r.t. the coupling) level. This is the bulk-boundary generalization of the Coleman-Weinberg's case. Renormalization group analysis is done where the correct 4d result is reproduced. The Casimir energy is calculated and is compared with the case of the Kaluza-Klein model.
Ichinose Shoichi
Murayama Akihiro
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