Why do we live in 3+1 dimensions?

Durrer, R, Kunz, M and Sakellariadou, M (2005) Why do we live in 3+1 dimensions? Physics Letters B, 614 (3-4). pp. 125-130. ISSN 0370-2693

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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 rle of our Universe. Within this picture, the evaporation of the higher-dimensional Dp-branes provides the entropy of our Universe.

Item Type: Article
Additional Information: Describes how in string theory branes are thought to annihilate with each other, until only 3-dimensional branes are left, to explain why we live in three spatial dimensions. Featured on Physicswatch (CERN) and in the February 5 2005 issue of the New Scientist. (29 HEP/SPIRES citations)
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Martin Kunz
Date Deposited: 06 Feb 2012 20:15
Last Modified: 18 Jun 2012 14:16
URI: http://sro.sussex.ac.uk/id/eprint/24982
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