On non-Gaussianities in two-field poly-instanton inflation
文献类型：期刊论文
| 作者 | Gao, X ; Shukla, P |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2013 |
| 期号 | 3页码:61 |
| 关键词 | STRING THEORY CALABI-YAU COMPACTIFICATIONS MODEL ORIENTIFOLDS FLATNESS UNIVERSE HORIZON |
| ISSN号 | 1029-8479 |
| 通讯作者 | Gao, X (reprint author), Werner Heisenberg Inst, Max Planck Inst Phys, Fohringer Ring 6, D-80805 Munich, Germany. |
| 英文摘要 | In the context of Type IIB LARGE volume orientifold setup equipped with poly-instanton corrections, the standard single-field poly-instanton inflation driven by a 'Wilson' divisor volume modulus is generalized by the inclusion of respective axion modulus. This two-tield dynamics results in a "Roulette" type inflation with the presence of several inflationary trajectories which could produce 50 (or more) e-foldings. The evolution of various trajectories along with physical observables are studied. The possibility of generating primordial non-Gaussianities in the slow-roll as well as in the beyond slow-roll region is investigated. We find that although the non-linearity parameters are quite small during the slow-roll regime, the same are significantly enhanced in the beyond slow-roll regime nvestigated up to the end of inflation. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | MPG-CAS Joint Doctoral Promotion Programme; Alexander von Humboldt Foundation |
| 原文出处 | http://dx.doi.org/10.1007/JHEP03(2013)061 |
| 语种 | 英语 |
| WOS记录号 | WOS:000317521200061 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15409]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Gao, X,Shukla, P. On non-Gaussianities in two-field poly-instanton inflation[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(3):61. |
| APA | Gao, X,&Shukla, P.(2013).On non-Gaussianities in two-field poly-instanton inflation.JOURNAL OF HIGH ENERGY PHYSICS(3),61. |
| MLA | Gao, X,et al."On non-Gaussianities in two-field poly-instanton inflation".JOURNAL OF HIGH ENERGY PHYSICS .3(2013):61. |
入库方式： OAI收割
来源：理论物理研究所
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