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Red Density Perturbations and Inflationary Gravitational Waves
We study the implications of recent indications for a red spectrum of primordial density perturbations for the detection of inflationary gravitational waves (IGWs) with forthcoming cosmic microwave background experiments. We find that if inflation occurs with a single field with an inflaton potentia...
Autores principales: | , , , |
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Lenguaje: | eng |
Publicado: |
2007
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1088/1475-7516/2008/04/009 http://cds.cern.ch/record/1047601 |
_version_ | 1780912811670503424 |
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author | Pagano, Luca Cooray, Asantha Melchiorri, Alessandro Kamionkowski, Marc |
author_facet | Pagano, Luca Cooray, Asantha Melchiorri, Alessandro Kamionkowski, Marc |
author_sort | Pagano, Luca |
collection | CERN |
description | We study the implications of recent indications for a red spectrum of primordial density perturbations for the detection of inflationary gravitational waves (IGWs) with forthcoming cosmic microwave background experiments. We find that if inflation occurs with a single field with an inflaton potential minimized at V=0, then Planck will be able to detect IGWs at better than 2$\sigma$ confidence level, unless the inflaton potential is a power law with a very weak power. The proposed satellite missions of the Cosmic Vision and Inflation Probe programs will be able to detect IGWs from all the models we have surveyed at better than 5$\sigma$ confidence level. We provide an example of what is required if the IGW background is to remain undetected even by these latter experiments. |
id | cern-1047601 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2007 |
record_format | invenio |
spelling | cern-10476012023-03-14T19:50:06Zdoi:10.1088/1475-7516/2008/04/009http://cds.cern.ch/record/1047601engPagano, LucaCooray, AsanthaMelchiorri, AlessandroKamionkowski, MarcRed Density Perturbations and Inflationary Gravitational WavesAstrophysics and AstronomyWe study the implications of recent indications for a red spectrum of primordial density perturbations for the detection of inflationary gravitational waves (IGWs) with forthcoming cosmic microwave background experiments. We find that if inflation occurs with a single field with an inflaton potential minimized at V=0, then Planck will be able to detect IGWs at better than 2$\sigma$ confidence level, unless the inflaton potential is a power law with a very weak power. The proposed satellite missions of the Cosmic Vision and Inflation Probe programs will be able to detect IGWs from all the models we have surveyed at better than 5$\sigma$ confidence level. We provide an example of what is required if the IGW background is to remain undetected even by these latter experiments.We study the implications of recent indications for a red spectrum of primordial density perturbations for the detection of inflationary gravitational waves (IGWs) with forthcoming cosmic microwave background experiments. We find that if inflation occurs with a single field with an inflaton potential minimized at V=0, then Planck will be able to detect IGWs at better than 2$\sigma$ confidence level, unless the inflaton potential is a power law with a very weak power. The proposed satellite missions of the Cosmic Vision and Inflation Probe programs will be able to detect IGWs from all the models we have surveyed at better than 5$\sigma$ confidence level. We provide an example of what is required if the IGW background is to remain undetected even by these latter experiments.arXiv:0707.2560CERN-PH-TH-2007-251oai:cds.cern.ch:10476012007-07-18 |
spellingShingle | Astrophysics and Astronomy Pagano, Luca Cooray, Asantha Melchiorri, Alessandro Kamionkowski, Marc Red Density Perturbations and Inflationary Gravitational Waves |
title | Red Density Perturbations and Inflationary Gravitational Waves |
title_full | Red Density Perturbations and Inflationary Gravitational Waves |
title_fullStr | Red Density Perturbations and Inflationary Gravitational Waves |
title_full_unstemmed | Red Density Perturbations and Inflationary Gravitational Waves |
title_short | Red Density Perturbations and Inflationary Gravitational Waves |
title_sort | red density perturbations and inflationary gravitational waves |
topic | Astrophysics and Astronomy |
url | https://dx.doi.org/10.1088/1475-7516/2008/04/009 http://cds.cern.ch/record/1047601 |
work_keys_str_mv | AT paganoluca reddensityperturbationsandinflationarygravitationalwaves AT coorayasantha reddensityperturbationsandinflationarygravitationalwaves AT melchiorrialessandro reddensityperturbationsandinflationarygravitationalwaves AT kamionkowskimarc reddensityperturbationsandinflationarygravitationalwaves |