In Search of New Gravity: testing advanced theories of gravity with cosmological data

寻找新的引力：用宇宙学数据测试先进的引力理论

• 批准号: FT130101086
• 负责人: Dr David Parkinson
• 金额: $ 37.48万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: ARC Future Fellowships
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2017-06-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/FT130101086
• 关键词: Search; New; Gravity; testing; advanced

The most startling discovery in cosmology in the last few decades has been that the Universe is accelerating. This remarkable fact indicates that our theory of gravity may need revision. Our current theory, Einstein’s theory of General Relativity, stands up in our solar system. If this theory breaks down on large scales, leading to the accelerating expansion, there must be some ‘cross-over’ scale where the theory changes. This project will make theoretical predictions for those models that contain a cross-over and test them against current data for current and upcoming Australian cosmological surveys. It will determine if our current theory of gravity is a satisfactory theory, and if it is not, which new theory should replace it.

过去几十年来，宇宙学中最令人震惊的发现是宇宙正在加速膨胀。这一引人注目的事实表明我们的引力理论可能需要修正。我们当前的理论，爱因斯坦的广义相对论，在我们的太阳系中站得住脚。如果这个理论在大范围内崩溃，导致加速扩张，那么一定存在某种“交叉”规模，理论会发生变化。该项目将对那些包含交叉的模型进行理论预测，并根据当前和即将进行的澳大利亚宇宙学调查的当前数据对其进行测试。它将决定我们当前的引力理论是否是一个令人满意的理论，如果不是，则应该用哪种新理论来取代它。