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Conformal Invariance, Dynamical Dark Energy and the CMB

General Relativity receives quantum corrections relevant at cosmological distance scales from the conformal scalar degrees of freedom required by the trace anomaly of the quantum stress tensor in curved space. In the theory including the trace anomaly terms, the cosmological 'constant' bec...

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Autor principal: Mottola, Emil
Lenguaje:eng
Publicado: 2011
Materias:
Acceso en línea:http://cds.cern.ch/record/1334815
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author Mottola, Emil
author_facet Mottola, Emil
author_sort Mottola, Emil
collection CERN
description General Relativity receives quantum corrections relevant at cosmological distance scales from the conformal scalar degrees of freedom required by the trace anomaly of the quantum stress tensor in curved space. In the theory including the trace anomaly terms, the cosmological 'constant' becomes dynamical and hence potentially dependent upon both space and time. The fluctuations of these anomaly scalars may also influence the spectrum and statistics of the Cosmic Microwave Background. Under the hypothesis that scale invariance should be promoted to full conformal invariance, an hypothesis supported by the exact equivalence of the conformal group of three dimensions with the de Sitter group SO(4,1), the form of the CMB bispectrum can be fixed, and the trispectrum constrained. The non-Gaussianities predicted by conformal invariance differ from those suggested by simple models of inflation.
id cern-1334815
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
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spelling cern-13348152021-05-11T13:21:43Zhttp://cds.cern.ch/record/1334815engMottola, EmilConformal Invariance, Dynamical Dark Energy and the CMBGeneral Relativity and CosmologyGeneral Relativity receives quantum corrections relevant at cosmological distance scales from the conformal scalar degrees of freedom required by the trace anomaly of the quantum stress tensor in curved space. In the theory including the trace anomaly terms, the cosmological 'constant' becomes dynamical and hence potentially dependent upon both space and time. The fluctuations of these anomaly scalars may also influence the spectrum and statistics of the Cosmic Microwave Background. Under the hypothesis that scale invariance should be promoted to full conformal invariance, an hypothesis supported by the exact equivalence of the conformal group of three dimensions with the de Sitter group SO(4,1), the form of the CMB bispectrum can be fixed, and the trispectrum constrained. The non-Gaussianities predicted by conformal invariance differ from those suggested by simple models of inflation.arXiv:1103.1613LA-UR-10-04603CERN-PH-TH-2011-039oai:cds.cern.ch:13348152011-03-09
spellingShingle General Relativity and Cosmology
Mottola, Emil
Conformal Invariance, Dynamical Dark Energy and the CMB
title Conformal Invariance, Dynamical Dark Energy and the CMB
title_full Conformal Invariance, Dynamical Dark Energy and the CMB
title_fullStr Conformal Invariance, Dynamical Dark Energy and the CMB
title_full_unstemmed Conformal Invariance, Dynamical Dark Energy and the CMB
title_short Conformal Invariance, Dynamical Dark Energy and the CMB
title_sort conformal invariance, dynamical dark energy and the cmb
topic General Relativity and Cosmology
url http://cds.cern.ch/record/1334815
work_keys_str_mv AT mottolaemil conformalinvariancedynamicaldarkenergyandthecmb