RT Journal Article
T1 Is the CMB cold spot a gate to extra dimensions?
A1 Ruiz Cembranos, José Alberto
A1 Cruz Dombriz, Álvaro de la
A1 Dobado González, Antonio
A1 López Maroto, Antonio
AB 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.
PB Iop Publishing Ltd
SN 1475-7516
YR 2008
FD 2008-10
LK https://hdl.handle.net/20.500.14352/50651
UL https://hdl.handle.net/20.500.14352/50651
LA eng
NO © 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.
NO DGICYT (Spain)
NO UCM-Santander
NO DOE
DS Docta Complutense
RD 11 may 2025