Physics of Extra Dimensions
This article is based on papers discussing different aspects of extra dimensional environments. In addition to the results, we review some of the concepts on which models with large extra dimensions are based.
hep-ph↗
arXiv subjects
Rula Tabbash
Publications and source records attributed to Rula Tabbash.
A New Approach To The Hierarchy Problem
We argue that identifying the electroweak Higgs particle with the extra components of the gauge field in $4+d$ dimensions provides a solution to the hierarchy problem. The absence of ultraviolate quadratic divergences is due to the fact that the Higgs mass is protected by an exact gauge symmetry at energies beyond the cutoff. The idea is implemented within explicit models which also provide a link between fermion chirality and electroweak symmetry breaking in four dimensions.
hep-ph↗
Compact Hyperbolic Manifolds as Internal Worlds
We comment briefly on some of the advantages and disadvantages of compact hyperbolic manifolds as candidate manifolds for large radii compactifications.
hep-ph↗
Geometric Bounds on Kaluza-Klein Masses
We point out geometric upper and lower bounds on the masses of bosonic and fermionic Kaluza-Klein excitations in the context of theories with large extra dimensions. The characteristic compactification length scale is set by the diameter of the internal manifold. Based on geometrical and topological considerations, we find that certain choices of compactification manifolds are more favoured for phenomenological purposes.
hep-ph↗