Anisotropic Inflation in a 5D Standing Wave Braneworld and Dimensional Reduction
arXiv:1202.1608 · doi:10.1016/j.physletb.2013.07.031
Abstract
We investigate a cosmological solution within the framework of a 5D standing wave braneworld model generated by gravity coupled to a massless scalar phantom-like field. By obtaining a full exact solution of the model we found a novel dynamical mechanism in which the anisotropic nature of the primordial metric gives rise to i) inflation along certain spatial dimensions, and ii) deflation and a shrinking reduction of the number of spatial dimensions along other directions. This dynamical mechanism can be relevant for dimensional reduction in string and other higher dimensional theories in the attempt of getting a 4D isotropic expanding space-time.
8 pages in Latex
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- New Class of N-dimensional Braneworlds
- Standing Waves Braneworlds
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- Discrete graviton spectrum from super-exponential cup potentials and their application to braneworld physics