Eternal inflation and swampland conjectures
We study if eternal inflation is realized while satisfying the recently proposed string swampland criteria concerning the range of scalar field excursion, |Δϕ| < D·M[subscript P], and the potential gradient, |∇V|>c·V/M[subscript P], where D and c are constants of order unity and M[subscript P]...
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Physical Society
2019
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| Online Access: | http://hdl.handle.net/1721.1/120170 |
| _version_ | 1811078972486713344 |
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| author | Matsui, Hiroki Takahashi, Fuminobu |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Matsui, Hiroki Takahashi, Fuminobu |
| author_sort | Matsui, Hiroki |
| collection | MIT |
| description | We study if eternal inflation is realized while satisfying the recently proposed string swampland criteria concerning the range of scalar field excursion, |Δϕ| < D·M[subscript P], and the potential gradient, |∇V|>c·V/M[subscript P], where D and c are constants of order unity and M[subscript P] is the reduced Planck mass. We find that only the eternal inflation of chaotic type is possible for c∼O(0.01) and 1/D∼O(0.01) and that the Hubble parameter during the eternal inflation is parametrically close to the Planck scale and is in the range of 2πc≲H[subscript inf]/M[subscript P]< 1/√3. |
| first_indexed | 2024-09-23T11:08:08Z |
| format | Article |
| id | mit-1721.1/120170 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:08:08Z |
| publishDate | 2019 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1201702022-10-01T01:29:13Z Eternal inflation and swampland conjectures Matsui, Hiroki Takahashi, Fuminobu Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Department of Physics Takahashi, Fuminobu We study if eternal inflation is realized while satisfying the recently proposed string swampland criteria concerning the range of scalar field excursion, |Δϕ| < D·M[subscript P], and the potential gradient, |∇V|>c·V/M[subscript P], where D and c are constants of order unity and M[subscript P] is the reduced Planck mass. We find that only the eternal inflation of chaotic type is possible for c∼O(0.01) and 1/D∼O(0.01) and that the Hubble parameter during the eternal inflation is parametrically close to the Planck scale and is in the range of 2πc≲H[subscript inf]/M[subscript P]< 1/√3. 2019-02-04T16:26:57Z 2019-02-04T16:26:57Z 2019-01 2018-08 2019-01-30T18:00:47Z Article http://purl.org/eprint/type/JournalArticle 2470-0010 2470-0029 http://hdl.handle.net/1721.1/120170 Matsui, Hiroki and Takahashi, Fuminobu. "Eternal inflation and swampland conjectures." Physical Review D 99, 2 (January 2019): 023533 en http://dx.doi.org/10.1103/PhysRevD.99.023533 Physical Review D Creative Commons Attribution http://creativecommons.org/licenses/by/3.0 application/pdf American Physical Society American Physical Society |
| spellingShingle | Matsui, Hiroki Takahashi, Fuminobu Eternal inflation and swampland conjectures |
| title | Eternal inflation and swampland conjectures |
| title_full | Eternal inflation and swampland conjectures |
| title_fullStr | Eternal inflation and swampland conjectures |
| title_full_unstemmed | Eternal inflation and swampland conjectures |
| title_short | Eternal inflation and swampland conjectures |
| title_sort | eternal inflation and swampland conjectures |
| url | http://hdl.handle.net/1721.1/120170 |
| work_keys_str_mv | AT matsuihiroki eternalinflationandswamplandconjectures AT takahashifuminobu eternalinflationandswamplandconjectures |