CAREER: Explorations in Quantum Gravity: Cosmological and Black Hole Spacetimes
职业:量子引力探索:宇宙学和黑洞时空
基本信息
- 批准号:1454832
- 负责人:
- 金额:$ 40万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-11-01 至 2021-10-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In Einstein's theory of general relativity classical spacetime ends at the singularities. Examples include the Big Bang singularity in cosmological models and the central singularity of the black hole spacetimes. At these events the spacetime curvature and tidal forces become infinite. Classical evolution stops. It has been hoped that quantum gravitational effects will provide insights on resolution of this fundamental problem. This Faculty Early CAREER award supports research towards answering various questions related to quantum gravity and resolution of singularities in cosmological and black hole spacetimes. The research carried out in this project will use techniques of loop quantum gravity. A primary objective will be to establish generic properties of quantum spacetime in presence of anisotropies and inhomogenities, and extract reliable phenomenological and observational predictions. The educational and outreach objectives of this project are designed to address a wide audience. The project aims to enhance the scientific enrichment of K-12 students via a public lecture series and science exhibitions and demonstrations. Active engagement techniques will be used to revamp undergraduate and graduate courses. Undergraduate and graduate students will also receive training through research activities.Detailed implications of the singularity resolution on the physics in different models will be explored. The project aims to significantly broaden and advance our current understanding of the physics of quantum gravity. Research explorations will include (i) systematically investigating the quantization and resulting physics of different spacetimes including anisotropies, inhomogenities in Gowdy models and Schwarzschild black holes, (ii) extracting phenomenological implications by analyzing effects of quantum gravity on cosmological perturbations, and (iii) addressing fundamental issues in quantum cosmology using consistent histories approach. Numerical techniques developed in this project will also lead to fresh insights on results in the classical gravity, such as on the structure of spacetime near classical singularities.
在爱因斯坦的广义相对论中,经典时空以奇点为终点。例子包括宇宙模型中的大爆炸奇点和黑洞时空的中心奇点。在这些事件中,时空曲率和潮汐作用力变得无限大。经典进化停止了。人们一直希望量子引力效应将为这一根本问题的解决提供见解。这一学院早期职业奖支持对回答与量子引力和宇宙和黑洞时空中奇点解析有关的各种问题的研究。该项目开展的研究将使用环路量子引力技术。一个主要目标将是在存在各向异性和不均匀的情况下建立量子时空的一般属性,并提取可靠的唯象和观测预测。该项目的教育和宣传目标旨在面向广大受众。该项目旨在通过公开系列讲座和科学展览和示范,加强K-12学生的科学知识。积极参与的技巧将被用于修改本科生和研究生课程。本科生和研究生也将通过研究活动接受培训。将探索奇点解析在不同模型中对物理的具体影响。该项目旨在极大地拓宽和推进我们目前对量子引力物理学的理解。研究探索将包括:(I)系统地研究不同时空的量子化和由此产生的物理,包括各向异性,Gowdy模型和Schwarzschild黑洞中的不均匀,(Ii)通过分析量子引力对宇宙微扰的影响来提取唯象意义,以及(Iii)使用一致历史方法解决量子宇宙学的基本问题。在这个项目中开发的数值技术还将导致对经典引力结果的新见解,例如关于经典奇点附近的时空结构的新见解。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Parampreet Singh其他文献
History of Neuroimaging: The Legacy of William Oldendorf
神经影像学的历史:威廉·奥尔登多夫的遗产
- DOI:
10.1177/0883073809359083 - 发表时间:
2010 - 期刊:
- 影响因子:1.9
- 作者:
Shri K. Mishra;Parampreet Singh - 通讯作者:
Parampreet Singh
Are loop quantum cosmos never singular?
- DOI:
10.1088/0264-9381/26/12/125005 - 发表时间:
2009-01 - 期刊:
- 影响因子:3.5
- 作者:
Parampreet Singh - 通讯作者:
Parampreet Singh
Role of autologous platelet rich plasma in treating symptomatic patients with osteoarthritis via double spinning technique
自体富血小板血浆通过双旋转技术治疗有症状的骨关节炎患者的作用
- DOI:
- 发表时间:
2016 - 期刊:
- 影响因子:0
- 作者:
H. K. Arora;Rohit Sharma;M. Manjari;Parampreet Singh - 通讯作者:
Parampreet Singh
Experimental and computational analysis of a row of three co-swirling impinging flames
- DOI:
10.1007/s00231-019-02706-x - 发表时间:
2019-08-01 - 期刊:
- 影响因子:2.000
- 作者:
Parampreet Singh;Ratna Kishore Velamati;Subhash Chander - 通讯作者:
Subhash Chander
The Vertex Expansion in the Consistent Histories Formulation of Spin Foam Loop Quantum Cosmology
自旋泡沫环量子宇宙学一致历史公式中的顶点展开
- DOI:
- 发表时间:
2016 - 期刊:
- 影响因子:0
- 作者:
David Craig;Parampreet Singh - 通讯作者:
Parampreet Singh
Parampreet Singh的其他文献
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{{ truncateString('Parampreet Singh', 18)}}的其他基金
Explorations in Quantum Gravity: Cosmological and Black Hole Spacetimes
量子引力探索:宇宙学和黑洞时空
- 批准号:
2110207 - 财政年份:2021
- 资助金额:
$ 40万 - 项目类别:
Continuing Grant
DFG-NSF: Investigations on Physical Implications of Canonical Quantum Gravity
DFG-NSF:规范量子引力的物理含义研究
- 批准号:
1912274 - 财政年份:2019
- 资助金额:
$ 40万 - 项目类别:
Continuing Grant
Singularity Resolution in Quantum Gravity
量子引力中的奇点分辨率
- 批准号:
1404240 - 财政年份:2014
- 资助金额:
$ 40万 - 项目类别:
Standard Grant
Singularity Resolution in Quantum Gravity
量子引力中的奇点分辨率
- 批准号:
1068743 - 财政年份:2011
- 资助金额:
$ 40万 - 项目类别:
Continuing Grant
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