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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳丕燊(Pisin Chen) | |
| dc.contributor.author | Hsiao-Heng Yeh | en |
| dc.contributor.author | 葉曉恆 | zh_TW |
| dc.date.accessioned | 2021-06-16T17:46:33Z | - |
| dc.date.available | 2021-03-03 | |
| dc.date.copyright | 2020-03-03 | |
| dc.date.issued | 2020 | |
| dc.date.submitted | 2020-02-27 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/64427 | - |
| dc.description.abstract | 宇宙微波背景在大尺度下的缺乏相關性可以幫助為探測宇宙暴漲 前的狀態。在本文中，我們研究基於哈妥-霍金無邊界條件的原始功率譜，該提案針對均質，各向同性和空間封閉的宇宙，該宇宙導致經典 化之後的斯塔羅賓斯基型宇宙暴漲。雖然我們發現在標準的理論中沒有大規模抑制，但我們也發現，如果將宇宙暴漲階段引入斯塔羅賓斯基型模型，則有可能充分抑制大尺度功率譜。此外，這種宇宙暴漲前的階段將有助於解釋哈妥-霍金無邊界提案中較大的 e 倍數的偏好。我們計算了宇宙微波背景輻射相關函數，並發現其結果更符合普朗克觀測實驗。這表明我們的宇宙可能是從具有小的正曲率的緊湊哈妥-霍金無邊界狀態開始的。 | zh_TW |
| dc.description.abstract | The lack of correlations on the large scale cosmic microwave background (CMB) anisotropy provides a potential window to probe beyond the standard inflationary scenario. In the thesis, we investigate the primordial power spectrum based on the Hartle-Hawking (HH) no-boundary proposal for a homogeneous, isotropic, and spatially-closed universe that leads to Starobinsky-type inflation after the classicalization. While we found that there is no suppression at large scales in the standard R + R2 theory, it is possible to suppress the large-scale power spectrum if a pre-inflationary stage is introduced to the Starobinsky-type model. In addition, such a pre-inflationary stage will be helpful to explain the preference of large e-foldings of the HH proposal. We calculate the C_TT correlation function and show that our proposal gives a better fit to the Planck CMB data. This suggests that our universe might have begun with a compact HH state with a small positive curvature. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-16T17:46:33Z (GMT). No. of bitstreams: 1 ntu-109-R06222077-1.pdf: 2678029 bytes, checksum: 3dfe0ee1ea3b9be6582a77df20e708a0 (MD5) Previous issue date: 2020 | en |
| dc.description.tableofcontents | 口試委員會審定書 iii
Acknowledgements v vii Abstract ix 1 Introduction 1 2 Power spectrum from the no-boundary wave function 5 2.1 TheHartle-Hawkingno-boundaryproposal . . . . . . . . . . . . . . . . 5 2.2 Harmonicexpansioninacloseduniverse ................. 7 2.3 Calculatingcosmologicalobservables ................... 9 3 Numerical solution and connection with CMB observations 11 3.1 Solvingequations.............................. 11 3.2 Starobinskymodel ............................. 13 3.3 ModifiedStarobinskymodel ........................ 14 3.4 ConnectionwiththeCMBspectrum .................... 18 4 Conclusion 23 5 Appendix 25 Bibliography 31 | |
| dc.language.iso | en | |
| dc.title | 以複數化瞬子當作宇宙形成之初始條件 | zh_TW |
| dc.title | Complex Instanton as the Initial Condition of the Universe | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 108-1 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 陳俊瑋(Jiunn-Wei Chen),賀培銘(Pei-Ming Ho),陳哲佑(Che-Yu Chen) | |
| dc.subject.keyword | Hartle-Hawking波函數,Starobinsky模型,原始功率譜,封閉宇宙,宇宙微波背景輻射大尺度抑制, | zh_TW |
| dc.subject.keyword | Hartle-Hawking wave function,Starobinsky model,primordial power spectrum,closed universe,CMB large scale suppression, | en |
| dc.relation.page | 33 | |
| dc.identifier.doi | 10.6342/NTU202000557 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2020-02-27 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 物理學研究所 | zh_TW |
| 顯示於系所單位： | 物理學系 | |
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