Decoherence in the cosmic background radiation

In this paper, we analyze the possibility of detecting nontrivial quantum phenomena in observations of the temperature anisotropy of the cosmic background radiation (CBR), for example, if the Universe could be found in a coherent superposition of two states corresponding to different CBR temperature...

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Publicado: 2011
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v28_n14_p_Franco
http://hdl.handle.net/20.500.12110/paper_02649381_v28_n14_p_Franco
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_02649381_v28_n14_p_Franco2023-06-08T15:23:27Z Decoherence in the cosmic background radiation In this paper, we analyze the possibility of detecting nontrivial quantum phenomena in observations of the temperature anisotropy of the cosmic background radiation (CBR), for example, if the Universe could be found in a coherent superposition of two states corresponding to different CBR temperatures. Such observations are sensitive to scalar primordial fluctuations but insensitive to tensor fluctuations, which are therefore converted into an environment for the former. Even for a free inflaton field minimally coupled to gravity, scalar-tensor interactions induce enough decoherence among histories of the scalar fluctuations as to render them classical under any realistic probe of their amplitudes. © 2011 IOP Publishing Ltd. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v28_n14_p_Franco http://hdl.handle.net/20.500.12110/paper_02649381_v28_n14_p_Franco
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description In this paper, we analyze the possibility of detecting nontrivial quantum phenomena in observations of the temperature anisotropy of the cosmic background radiation (CBR), for example, if the Universe could be found in a coherent superposition of two states corresponding to different CBR temperatures. Such observations are sensitive to scalar primordial fluctuations but insensitive to tensor fluctuations, which are therefore converted into an environment for the former. Even for a free inflaton field minimally coupled to gravity, scalar-tensor interactions induce enough decoherence among histories of the scalar fluctuations as to render them classical under any realistic probe of their amplitudes. © 2011 IOP Publishing Ltd.
title Decoherence in the cosmic background radiation
spellingShingle Decoherence in the cosmic background radiation
title_short Decoherence in the cosmic background radiation
title_full Decoherence in the cosmic background radiation
title_fullStr Decoherence in the cosmic background radiation
title_full_unstemmed Decoherence in the cosmic background radiation
title_sort decoherence in the cosmic background radiation
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v28_n14_p_Franco
http://hdl.handle.net/20.500.12110/paper_02649381_v28_n14_p_Franco
_version_ 1768545830030016512

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