Why do we live in 3+1 dimensions?

Details Why do we live in 3+1 dimensions? Why do we live in 3+1 dimensions?

2005-01-20

arxiv.org/abs/hep-th/0501163v2

Phys.Lett. B614 (2005) 125-130

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 4 figures. Citations added, text and figures updated to match version accepted for publication

Scientific paper

10.1016/j.physletb.2005.04.023

In the context of string theory we argue that higher dimensional Dp-branes
unwind and evaporate so that we are left with D3-branes embedded in a
(9+1)-dimensional bulk. One of these D3-branes plays the role of our Universe.
Within this picture, the evaporation of the higher dimensional Dp-branes
provides the entropy of our Universe.

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