Large Primordial Trispectra in General Single Field Inflation
We compute the large scalar four-point correlation functions in general single field inflation models, where the inflaton Lagrangian is an arbitrary function of the inflaton and its first derivative. We find that the leading order trispectra have four different shapes determined by three parameters....
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Institute of Physics Publishing
2009
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| Online Access: | http://hdl.handle.net/1721.1/49507 |
| _version_ | 1826211788680593408 |
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| author | Chen, Xingang Hu, Bin Huang, Min-xin Shiu, Gary Wang, Yi |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Chen, Xingang Hu, Bin Huang, Min-xin Shiu, Gary Wang, Yi |
| author_sort | Chen, Xingang |
| collection | MIT |
| description | We compute the large scalar four-point correlation functions in general single field inflation models, where the inflaton Lagrangian is an arbitrary function of the inflaton and its first derivative. We find that the leading order trispectra have four different shapes determined by three parameters. We study features in these shapes that can be used to distinguish among themselves, and between them and the trispectra of the local form. For the purpose of data analyses, we give two simple representative forms for these ``equilateral trispectra''. We also study the effects on the trispectra if the initial state of inflation deviates from the standard Bunch-Davies vacuum. |
| first_indexed | 2024-09-23T15:11:25Z |
| format | Article |
| id | mit-1721.1/49507 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:11:25Z |
| publishDate | 2009 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | mit-1721.1/495072022-09-29T13:15:15Z Large Primordial Trispectra in General Single Field Inflation Chen, Xingang Hu, Bin Huang, Min-xin Shiu, Gary Wang, Yi Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Chen, Xingang Chen, Xingang We compute the large scalar four-point correlation functions in general single field inflation models, where the inflaton Lagrangian is an arbitrary function of the inflaton and its first derivative. We find that the leading order trispectra have four different shapes determined by three parameters. We study features in these shapes that can be used to distinguish among themselves, and between them and the trispectra of the local form. For the purpose of data analyses, we give two simple representative forms for these ``equilateral trispectra''. We also study the effects on the trispectra if the initial state of inflation deviates from the standard Bunch-Davies vacuum. 2009-10-21T21:03:38Z 2009-10-21T21:03:38Z 2009-08 2009-06 Article http://purl.org/eprint/type/SubmittedJournalArticle 1475-7516 http://hdl.handle.net/1721.1/49507 Chen, Xingang, Bin Hu, Min-xin Huang, Gary Shiu and Yi Wang. “Large primordial trispectra in general single field inflation.” Journal of Cosmology and Astroparticle Physics 2009.08 (2009): 008. en_US http://dx.doi.org/10.1088/1475-7516/2009/08/008 Journal of Cosmology and Astroparticle Physics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Physics Publishing arXiv |
| spellingShingle | Chen, Xingang Hu, Bin Huang, Min-xin Shiu, Gary Wang, Yi Large Primordial Trispectra in General Single Field Inflation |
| title | Large Primordial Trispectra in General Single Field Inflation |
| title_full | Large Primordial Trispectra in General Single Field Inflation |
| title_fullStr | Large Primordial Trispectra in General Single Field Inflation |
| title_full_unstemmed | Large Primordial Trispectra in General Single Field Inflation |
| title_short | Large Primordial Trispectra in General Single Field Inflation |
| title_sort | large primordial trispectra in general single field inflation |
| url | http://hdl.handle.net/1721.1/49507 |
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