Supersymmetry Breaking and Gravitino Production after Inflation in Modular Invariant Supergravity
| Title: | Supersymmetry Breaking and Gravitino Production after Inflation in Modular Invariant Supergravity |
|---|---|
| Authors: | Takagi, Kenji, Koshimizu, Yuta, Fukuoka, Toyokazu, Kasari, Hikoya, Hayashi, Mitsuo J. |
| Publication Year: | 2010 |
| Collection: | High Energy Physics - Phenomenology |
| Subject Terms: | High Energy Physics - Phenomenology |
| More Details: | By using a string-inspired modular invariant supergravity, which was proved well to explain WMAP observations appropriately, a mechanism of supersymmetry breaking (SSB) and Gravitino Production just after the end of inflation are investigated. Supersymmetry is broken mainly by F-term of the inflaton superfield and the Goldstino is identified to be inflatino in this model, which fact is shown numerically. By using the canonically normalized and diagonalized scalars, the decay rates of these fields are calculated, for both the $T$ and $Y$ into gravitinos. Non-thermal production of gravitinos is not generated from the inflaton (dilaton), since the inflaton mass is lighter than gravitino, but they are produced by the decay of modular field $T$ and scalar field $Y$. Because the reheating temperature $T_R$ is about order $\sim O(10^{10})$ GeV and the mass of gravitino is $3.16 \times 10^{12}$ GeV, it is not reproduced after the reheating of the universe. The gravitinos are produced almost instantly just after the end of inflation through $Y$ and $T$, not from inflaton. Because the decay time appears very rapid, gravitinos disappear before the BBN stage of the universe. The effects of the lightest supersymmetric particles (LSP) produced by gravitinos may be important to investigate more carefully, if the LSP's are the candidate of dark matter. Comment: 11 pages, 1 figures |
| Document Type: | Working Paper |
| Access URL: | http://arxiv.org/abs/1002.4697 |
| Accession Number: | edsarx.1002.4697 |
| Database: | arXiv |
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| Items | – Name: Title Label: Title Group: Ti Data: Supersymmetry Breaking and Gravitino Production after Inflation in Modular Invariant Supergravity – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Takagi%2C+Kenji%22">Takagi, Kenji</searchLink><br /><searchLink fieldCode="AR" term="%22Koshimizu%2C+Yuta%22">Koshimizu, Yuta</searchLink><br /><searchLink fieldCode="AR" term="%22Fukuoka%2C+Toyokazu%22">Fukuoka, Toyokazu</searchLink><br /><searchLink fieldCode="AR" term="%22Kasari%2C+Hikoya%22">Kasari, Hikoya</searchLink><br /><searchLink fieldCode="AR" term="%22Hayashi%2C+Mitsuo+J%2E%22">Hayashi, Mitsuo J.</searchLink> – Name: DatePubCY Label: Publication Year Group: Date Data: 2010 – Name: Subset Label: Collection Group: HoldingsInfo Data: High Energy Physics - Phenomenology – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22High+Energy+Physics+-+Phenomenology%22">High Energy Physics - Phenomenology</searchLink> – Name: Abstract Label: Description Group: Ab Data: By using a string-inspired modular invariant supergravity, which was proved well to explain WMAP observations appropriately, a mechanism of supersymmetry breaking (SSB) and Gravitino Production just after the end of inflation are investigated. Supersymmetry is broken mainly by F-term of the inflaton superfield and the Goldstino is identified to be inflatino in this model, which fact is shown numerically. By using the canonically normalized and diagonalized scalars, the decay rates of these fields are calculated, for both the $T$ and $Y$ into gravitinos. Non-thermal production of gravitinos is not generated from the inflaton (dilaton), since the inflaton mass is lighter than gravitino, but they are produced by the decay of modular field $T$ and scalar field $Y$. Because the reheating temperature $T_R$ is about order $\sim O(10^{10})$ GeV and the mass of gravitino is $3.16 \times 10^{12}$ GeV, it is not reproduced after the reheating of the universe. The gravitinos are produced almost instantly just after the end of inflation through $Y$ and $T$, not from inflaton. Because the decay time appears very rapid, gravitinos disappear before the BBN stage of the universe. The effects of the lightest supersymmetric particles (LSP) produced by gravitinos may be important to investigate more carefully, if the LSP's are the candidate of dark matter.<br />Comment: 11 pages, 1 figures – Name: TypeDocument Label: Document Type Group: TypDoc Data: Working Paper – Name: URL Label: Access URL Group: URL Data: <link linkTarget="URL" linkTerm="http://arxiv.org/abs/1002.4697" linkWindow="_blank">http://arxiv.org/abs/1002.4697</link> – Name: AN Label: Accession Number Group: ID Data: edsarx.1002.4697 |
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| RecordInfo | BibRecord: BibEntity: Subjects: – SubjectFull: High Energy Physics - Phenomenology Type: general Titles: – TitleFull: Supersymmetry Breaking and Gravitino Production after Inflation in Modular Invariant Supergravity Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Takagi, Kenji – PersonEntity: Name: NameFull: Koshimizu, Yuta – PersonEntity: Name: NameFull: Fukuoka, Toyokazu – PersonEntity: Name: NameFull: Kasari, Hikoya – PersonEntity: Name: NameFull: Hayashi, Mitsuo J. IsPartOfRelationships: – BibEntity: Dates: – D: 25 M: 02 Type: published Y: 2010 |
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