Inflationary paradigm after Planck 2013
Models of cosmic inflation posit an early phase of accelerated expansion of the universe, driven by the dynamics of one or more scalar fields in curved spacetime. Though detailed assumptions about fields and couplings vary across models, inflation makes specific, quantitative predictions for several...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2016
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| Online Access: | http://hdl.handle.net/1721.1/105902 https://orcid.org/0000-0003-3802-5206 https://orcid.org/0000-0002-5054-6744 |
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| author | Nomura, Yasunori Guth, Alan Kaiser, David I. |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Nomura, Yasunori Guth, Alan Kaiser, David I. |
| author_sort | Nomura, Yasunori |
| collection | MIT |
| description | Models of cosmic inflation posit an early phase of accelerated expansion of the universe, driven by the dynamics of one or more scalar fields in curved spacetime. Though detailed assumptions about fields and couplings vary across models, inflation makes specific, quantitative predictions for several observable quantities, such as the flatness parameter (Ωk=1−Ω) and the spectral tilt of primordial curvature perturbations (ns−1=dlnP[subscript R]/dlnk), among others—predictions that match the latest observations from the Planck satellite to very good precision. In the light of data from Planck as well as recent theoretical developments in the study of eternal inflation and the multiverse, we address recent criticisms of inflation by Ijjas, Steinhardt, and Loeb. We argue that their conclusions rest on several problematic assumptions, and we conclude that cosmic inflation is on a stronger footing than ever before. |
| first_indexed | 2024-09-23T09:54:09Z |
| format | Article |
| id | mit-1721.1/105902 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:54:09Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1059022022-09-26T14:28:03Z Inflationary paradigm after Planck 2013 Nomura, Yasunori Guth, Alan Kaiser, David I. Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Massachusetts Institute of Technology. Program in Science, Technology and Society Guth, Alan Kaiser, David I. Models of cosmic inflation posit an early phase of accelerated expansion of the universe, driven by the dynamics of one or more scalar fields in curved spacetime. Though detailed assumptions about fields and couplings vary across models, inflation makes specific, quantitative predictions for several observable quantities, such as the flatness parameter (Ωk=1−Ω) and the spectral tilt of primordial curvature perturbations (ns−1=dlnP[subscript R]/dlnk), among others—predictions that match the latest observations from the Planck satellite to very good precision. In the light of data from Planck as well as recent theoretical developments in the study of eternal inflation and the multiverse, we address recent criticisms of inflation by Ijjas, Steinhardt, and Loeb. We argue that their conclusions rest on several problematic assumptions, and we conclude that cosmic inflation is on a stronger footing than ever before. United States. Dept. of Energy (Cooperative Research Agreement DE-FG02-05ER41360) 2016-12-20T21:06:42Z 2016-12-20T21:06:42Z 2014-04 2014-03 Article http://purl.org/eprint/type/JournalArticle 03702693 http://hdl.handle.net/1721.1/105902 Guth, Alan H., David I. Kaiser, and Yasunori Nomura. “Inflationary Paradigm after Planck 2013.” Physics Letters B 733 (2014): 112–119. https://orcid.org/0000-0003-3802-5206 https://orcid.org/0000-0002-5054-6744 en_US http://dx.doi.org/10.1016/j.physletb.2014.03.020 Physics Letters B Creative Commons Attribution 3.0 Unported licence http://creativecommons.org/licenses/by/3.0/ application/pdf Elsevier Elsevier |
| spellingShingle | Nomura, Yasunori Guth, Alan Kaiser, David I. Inflationary paradigm after Planck 2013 |
| title | Inflationary paradigm after Planck 2013 |
| title_full | Inflationary paradigm after Planck 2013 |
| title_fullStr | Inflationary paradigm after Planck 2013 |
| title_full_unstemmed | Inflationary paradigm after Planck 2013 |
| title_short | Inflationary paradigm after Planck 2013 |
| title_sort | inflationary paradigm after planck 2013 |
| url | http://hdl.handle.net/1721.1/105902 https://orcid.org/0000-0003-3802-5206 https://orcid.org/0000-0002-5054-6744 |
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