2026-06-29T07:41:53Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/507492024-06-17T15:08:35Zcom_20.500.14352_14col_20.500.14352_15
Is the CMB cold spot a gate to extra dimensions?
Ruiz Cembranos, José Alberto
Cruz Dombriz, Álvaro de la
Dobado González, Antonio
López Maroto, Antonio
53
Global Texture
Cosmic Structure
Origin
Millimeter
Physics
Wmap
Física (Física)
22 Física
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.
Dirección General de Investigación Científica y Técnica (España)
Comunidad de Madrid
Universidad Complutense de Madrid-Banco de Santander
Depto. de Física Teórica
Fac. de Ciencias Físicas
TRUE
pub
2023-06-20T10:36:28Z
2023-06-20T10:36:28Z
©2008 IOP Publishing Ltd and SISSA.
This work has been partially supported by the DGICYT (Spain) under projects FPA2004-02602, FPA2005-02327 and CAM/UCM 910309, by UCM-Santander PR34/07-15875 and by DOE grant DOE/DE-FG02-94ER40823.
2008-10
journal article
https://hdl.handle.net/20.500.14352/50749
1475-7516
10.1088/1475-7516/2008/10/039
eng
FPA2004- 02602
FPA2005-02327
910309
PR34/07-15875
DOE/DE-FG02-94ER40823.
Cembranos, J. A. R., et al. «Is the CMB cold spot a gate to extra dimensions?» Journal of Cosmology and Astroparticle Physics, vol. 2008, n.o 10, octubre de 2008, p. 039. DOI.org (Crossref), https://doi.org/10.1088/1475-7516/2008/10/039.
open access
application/pdf
IOP Publishing Ltd