Inflating magnetically charged braneworlds

Details Inflating magnetically charged braneworlds Inflating magnetically charged braneworlds

2003-09-25

arxiv.org/abs/hep-th/0309236v1

Phys.Rev. D69 (2004) 045005

Physics

High Energy Physics

High Energy Physics - Theory

35 pages, revtex, 18 eps figures

Scientific paper

10.1103/PhysRevD.69.045005

Numerical solutions of Einstein, scalar, and gauge field equations are found for static and inflating defects in a higher-dimensional spacetime. The defects have $(3+1)$-dimensional core and magnetic monopole configuration in $n=3$ extra dimensions. For symmetry-breaking scale $\eta$ below the critical value $\eta_c$, the defects are characterized by a flat worldsheet geometry and asymptotically flat extra dimensions. The critical scale $\eta_c$ is comparable to the higher-dimensional Planck scale and has some dependence on the gauge and scalar couplings. For $\eta=\eta_c$, the extra dimensions degenerate into a `cigar', and for $\eta>\eta_c$ all static solutions are singular. The singularity can be removed if the requirement of staticity is relaxed and defect cores are allowed to inflate. The inflating solutions have de Sitter worldsheets and cigar geometry in the extra dimensions. Exact analytic solutions describing the asymptotic behavior of these inflating monopoles are found and the parameter space of these solutions is analyzed.

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