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Is the CMB cold spot a gate to extra dimensions?

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Ruiz Cembranos, José Alberto and Cruz Dombriz, Álvaro de la and Dobado González, Antonio and López Maroto, Antonio (2008) Is the CMB cold spot a gate to extra dimensions? Journal of Cosmology and Astroparticle Physics (10). ISSN 1475-7516

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Official URL: http://iopscience.iop.org/1475-7516/2008/10/039




Abstract

One of the most striking features found in the cosmic microwave background data is the presence of an anomalous cold spot (CS) in the temperature maps made by the Wilkinson Microwave Anisotropy Probe (WMAP). This CS has been interpreted as the result of the presence of a collapsing texture, perhaps coming from some early universe grand unified theory (GUT) phase transition. In this work we propose an alternative explanation based on a completely different kind of texture which appears in a natural way in a broad class of brane-world models. This type of texture, known as a brane-skyrmion, can be understood as a hole in the brane which makes it possible to pass through them along the extra-dimensional space. The typical scales needed for the proposed brane-skyrmions to correctly describe the observed CS can be as low as the electroweak scale.


Item Type:Article
Additional Information:

© 2008 IOP Publishing Ltd and SISSA.
This work has been partially supported by the DGICYT (Spain) under projects FPA200402602, FPA2005-02327 and CAM/UCM 910309, by UCM-Santander PR34/07-15875 and by DOE grant DOE/DE-FG02-94ER40823.

Uncontrolled Keywords:Global Texture, Cosmic Structure, Origin, Millimeter, Physics, Wmap
Subjects:Sciences > Physics
ID Code:21442
Deposited On:12 Jun 2013 17:09
Last Modified:19 Nov 2014 13:11

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