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Is there a fundamental cosmological dipole?

Early hints for deviation from the cosmological principle and statistical isotropy are being accumulated. After reviewing these hints, I focus on four cosmologically observed axes which appear to be either marginally consistent or in conflict with the standard ΛCDM isotropic and homogeneous cosmolog...

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Detalles Bibliográficos
Autor principal: Perivolaropoulos, Leandros
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:http://cds.cern.ch/record/1692599
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author Perivolaropoulos, Leandros
author_facet Perivolaropoulos, Leandros
author_sort Perivolaropoulos, Leandros
collection CERN
description Early hints for deviation from the cosmological principle and statistical isotropy are being accumulated. After reviewing these hints, I focus on four cosmologically observed axes which appear to be either marginally consistent or in conflict with the standard ΛCDM isotropic and homogeneous cosmology. These axes are abnormally aligned with each other and include: (a) The Fine Structure Constant α Dipole (b) the Dark Energy Dipole (c) the Dark Velocity Flow and (d) the CMB Maximum Temperature Asymmetry. I also discuss a simple physical model (extended topological quintessence) that has the potential to explain the existence and alignment of these axes. The model is based on the recent formation of a global monopole with Hubble scale core by an O(3) symmetric scalar field, non-minimally coupled to electromagnetism.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
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spelling cern-16925992019-09-30T06:29:59Zhttp://cds.cern.ch/record/1692599engPerivolaropoulos, LeandrosIs there a fundamental cosmological dipole?General Relativity and CosmologyAstrophysics and AstronomyEarly hints for deviation from the cosmological principle and statistical isotropy are being accumulated. After reviewing these hints, I focus on four cosmologically observed axes which appear to be either marginally consistent or in conflict with the standard ΛCDM isotropic and homogeneous cosmology. These axes are abnormally aligned with each other and include: (a) The Fine Structure Constant α Dipole (b) the Dark Energy Dipole (c) the Dark Velocity Flow and (d) the CMB Maximum Temperature Asymmetry. I also discuss a simple physical model (extended topological quintessence) that has the potential to explain the existence and alignment of these axes. The model is based on the recent formation of a global monopole with Hubble scale core by an O(3) symmetric scalar field, non-minimally coupled to electromagnetism.oai:cds.cern.ch:16925992014
spellingShingle General Relativity and Cosmology
Astrophysics and Astronomy
Perivolaropoulos, Leandros
Is there a fundamental cosmological dipole?
title Is there a fundamental cosmological dipole?
title_full Is there a fundamental cosmological dipole?
title_fullStr Is there a fundamental cosmological dipole?
title_full_unstemmed Is there a fundamental cosmological dipole?
title_short Is there a fundamental cosmological dipole?
title_sort is there a fundamental cosmological dipole?
topic General Relativity and Cosmology
Astrophysics and Astronomy
url http://cds.cern.ch/record/1692599
work_keys_str_mv AT perivolaropoulosleandros isthereafundamentalcosmologicaldipole