Why do we live in 3+1 dimensions?

2) ((1) University of Geneva; (2) University of Athens); Mairi Sakellariadou (1; Martin Kunz (1); Ruth Durrer (1)

arxiv: hep-th/0501163 · v2 · submitted 2005-01-20 · ✦ hep-th · astro-ph· gr-qc· hep-ph

Why do we live in 3+1 dimensions?

Ruth Durrer (1) , Martin Kunz (1) , Mairi Sakellariadou (1 , 2) ((1) University of Geneva , (2) University of Athens) This is my paper

classification ✦ hep-th astro-phgr-qchep-ph

keywords dimensionald3-branesdp-braneshigheruniversearguebulkcontext

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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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Why do we live in 3+1 dimensions?

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