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Stabilization of Extra Dimensions and The Dimensionality of the Observed Space

High Energy Physics - Theory 2008-11-26 v5 Astrophysics General Relativity and Quantum Cosmology

Abstract

We present a simple model for the late time stabilization of extra dimensions. The basic idea is that brane solutions wrapped around extra dimensions, which is allowed by string theory, will resist expansion due to their winding mode. The momentum modes in principle work in the opposite way. It is this interplay that leads to dynamical stabilization. We use the idea of democratic wrapping \cite{art5}-\cite{art6}, where in a given decimation of extra dimensions, all possible winding cases are considered. To simplify the study further we assumed a symmetric decimation in which the total number of extra dimensions is taken to be NpNp where N can be called the order of the decimation. We also assumed that extra dimensions all have the topology of tori. We show that with these rather conservative assumptions, there exists solutions to the field equations in which the extra dimensions are stabilized and that the conditions do not depend on pp. This fact means that there exists at least one solution to the asymmetric decimation case. If we denote the number of observed space dimensions (excluding time) by mm, the condition for stabilization is m3m\geq 3 for pure Einstein gravity and m3m\leq 3 for dilaton gravity massaged by string theory parameters.

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Cite

@article{arxiv.hep-th/0504047,
  title  = {Stabilization of Extra Dimensions and The Dimensionality of the Observed Space},
  author = {Tonguç Rador},
  journal= {arXiv preprint arXiv:hep-th/0504047},
  year   = {2008}
}

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