We outline a toy model in which a unique mechanism may trigger a dynamical
chain resulting in key low-energy regularities. The starting points are a
negative cosmological term in the bulk and conformally invariant nongravity
sector. These elements ensure compactification of the extra dimensional space
on a compact hyperbolic manifold (with the negative and constant scalar
curvature). The overall geometry is then M_4 x B_n. The negative curvature on
B_n triggers the formation of the four-dimensional defect which provides in
turn a dynamical localization of ordinary particles. It also leads,
simultaneously, to a spontaneous breaking of gauge symmetry through a Higgs
mechanism. Masses of the fermions, gauge bosons and scalars all derive from the
curvature of the internal manifold such that the Higgs boson is generally
heavier than the gauge bosons. The factorizable geometry M_4 x B_n and flatness
of M_4 require fine-tuning.Comment: 16 pp, added references and a figure with improvements in text;
journal versio
