Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-10-07
Physics
High Energy Physics
High Energy Physics - Theory
19 pages, 15 figures. To appear in Physical Review D
Scientific paper
We have studied the localization of scalar field on a 3-brane embedded in a six dimensional warped bulk of the form $M_{4}\times C_{2}$, where $M_{4}$ is a 3-brane and $C_{2}$ is a 2-cycle of a six resolved conifold $\mathcal{C}_{6}$ over a $T^{1,1}$ space. Since the resolved conifold is singularity-free in $r=0$ depending on a resolution parameter $a$, we have analyzed the behavior of the localization of scalar field when we vary the resolution parameter. On one hand, this enable us to study the effects that a singularity has on the field. On the other hand we can use the resolution parameter as a fine-tuning between the bulk Planck mass and 3-brane Planck mass and so it opens a new perspective to extend the hierarchy problem. Using a linear and a nonlinear warp factor, we have found that the massive and massless modes are trapped to the brane even in the singular cone ($a\neq 0$). We have also compared the results obtained in this geometry and those obtained in other six-dimensional models, as string-like geometry and cigar-like universe geometry.
Almeida Carlos A. S.
Silva J. E. G.
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