Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-03-24
Int.J.Mod.Phys.A22:2629-2642,2007
Physics
High Energy Physics
High Energy Physics - Theory
9 pages, 1 figure. Published version. Accepted for publication in Int. J. of Modern Physics A
Scientific paper
10.1142/S0217751X07036774
In recent papers, a model of a two-sheeted spacetime M4XZ2 was introduced and the quantum dynamics of massive fermions was studied in this framework. In the present study, we show that the physical predictions of the model are perfectly consistent with observations and most important, it can solve the puzzling problem of the four-dimensional localization of the fermion species in multidimensional spacetimes. It is demonstrated that fermion localization on the sheets arises from the combination of the discrete bulk structure and environmental interactions. The mechanism described in this paper can be seen as an alternative to the domain wall localization arising in continuous five dimensional spacetimes. Although tightly constrained, motions between the sheets are, however, not completely prohibited. As an illustration, a resonant mechanism through which fermion oscillations between the sheets might occur is described.
Petit Fabrice
Sarrazin Michael
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