Detecting Extra-dimensions through Cosmic Background Radiation
通过宇宙背景辐射探测额外维度
基本信息
- 批准号:14540258
- 负责人:
- 金额:$ 2.05万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2002
- 资助国家:日本
- 起止时间:2002 至 2005
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Recent observation on cosmic background radiation by WMAP strongly supports the validity of the inflationary scenario. Nowadays, the most important issue in theoretical cosmology is to unveil the inflaton. On the other hand, it is widely believed that the superstring theory is the most promising candidate of the ultimate unified theory of everything. The most precise prediction of superstring theory is that our world is 10-dimensions. That means the extra 6-dimensions must be compactified to the small size to reconcile with our real world. Recent developments of superstring theory suggest the braneworld picture as a mechanism of compactification. We have unveiled the inflaton based on this new picture of the world, namely braneworld. Firstly, we have constructed the 4-dimensional effective theory describing the low energy dynamics of the braneworld by using the gradient expansion method invented by us. Then, using this effective theory, we have analyzed the collision process of two braneworlds. At the collision point, we have utilized the purely 5-dimensional analysis. The point is that we have constructed the geometrical inflation model. In our inflationary model, Inflation is caused by the flux in the bulk and terminated by the collision of braneworlds. The heat produced by the collision ignites the big-bang of our universe. We have also calculated the cosmological perturbations produced by the quantum process during rapid expansion and shown that the predictions are consistent with the present observations.
WMAP最近对宇宙背景辐射的观测有力地支持了暴胀假说的正确性。目前,理论宇宙学中最重要的问题是揭开暴胀子的面纱。另一方面,人们普遍认为超弦理论是万物最终统一理论的最有希望的候选者。超弦理论最精确的预测是我们的世界是10维的。这意味着额外的6维必须被压缩到小尺寸,以与我们的真实的世界相协调。超弦理论的最新发展表明,膜世界图景是紧化的一种机制。我们已经揭示了基于这个新的世界图景的暴胀子,即膜世界。首先,我们利用我们发明的梯度展开方法构建了描述膜世界低能动力学的4维有效理论。然后,利用这个有效的理论,我们分析了两个膜世界的碰撞过程。在碰撞点处,我们利用了纯5维分析。关键是我们已经构建了几何膨胀模型。在我们的暴胀模型中,暴胀是由整体通量引起的,并因膜世界的碰撞而终止。碰撞产生的热量点燃了我们宇宙的大爆炸。我们还计算了快速膨胀过程中量子过程产生的宇宙学扰动,并表明预言与目前的观测是一致的。
项目成果
期刊论文数量(12)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Takashi Tamaki: "Radionic Non-uniform Black Strings"Physical Review D. 69. 024010 1-024010 8 (2004)
Takashi Tamaki:“Radionic Non-uniform Black Strings”Physical Review D. 69. 024010 1-024010 8 (2004)
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Quasi-Thick Codimension 2 Braneworld
准厚余维 2 膜世界
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:Sugumi Kanno;Sugumi Kanno;Sugumi Kanno;Sugumi Kanno;Sugumi Kanno;Sugumi Kanno;Sugumi Kanno
- 通讯作者:Sugumi Kanno
A Unified View of RS Braneworld
RS Braneworld 的统一视图
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:Sugumi Kanno;Sugumi Kanno;Sugumi Kanno;Sugumi Kanno;Sugumi Kanno;Sugumi Kanno;Sugumi Kanno;Sugumi Kanno
- 通讯作者:Sugumi Kanno
Braneworld flux inflation
- DOI:10.1088/1475-7516/2005/08/002
- 发表时间:2005-06
- 期刊:
- 影响因子:6.4
- 作者:S. Kanno;J. Soda;D. Wands
- 通讯作者:S. Kanno;J. Soda;D. Wands
Sugumi Kanno: "Low Energy Effective Action for Dilatonic Braneworld"General Relativity and Gravitation. 36. 689-712 (2004)
菅野杉美:“扩张膜世界的低能量有效行动”广义相对论和万有引力。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
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{{ truncateString('SODA Jiro', 18)}}的其他基金
Anisotropic inflation from supergravity
超重力引起的各向异性膨胀
- 批准号:
22540274 - 财政年份:2010
- 资助金额:
$ 2.05万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
A Possible Lorentz Violation and Its Impact on Cosmology
可能的洛伦兹破缺及其对宇宙学的影响
- 批准号:
18540262 - 财政年份:2006
- 资助金额:
$ 2.05万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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Mapping Galactic Synchrotron Emission to Facilitate the Detection of Inflationary Gravitational Waves
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Gravitational Waves Produced during the Inflationary Epoch
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21K13918 - 财政年份:2021
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Complex action theory and the naturalness problem in inflationary cosmology
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21K03381 - 财政年份:2021
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