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Theory and Phenomenology of Einstein Equivalence Principle Violations

违反爱因斯坦等价原理的理论和现象学

基本信息

批准号：
2207734
负责人：
Quentin Bailey
金额：
$ 3万
依托单位：
Embry-Riddle Aeronautical University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2022
资助国家：
美国
起止时间：
2022-06-01 至 2023-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2207734&HistoricalAwards=false
关键词：
Theory Phenomenology Einstein Equivalence Principle

项目摘要

Quantum physics and Einstein's General Relativity (GR) describe nearly all known physics quite successfully. However, physicists conjecture that there exists a theory of everything that would unify these two theories. One popular approach of late is to identify features of such a unified theory that could result in experimental signatures or evidence of new physics in sensitive experiments and observations. Fundamental principles of GR such as the lack of any special direction in space (isotropy of space) could be violated in proposals for a unified theory of physics. The PI will investigate new types of signals for the breaking of isotropy of space that could be measured in sensitive observations of astrophysical systems like pulsars and measurements of the ripples in spacetime known as gravitational waves. This award will support undergraduate research opportunities in theoretical physics.The Einstein Equivalence Principle (EEP), a vital foundation of GR, includes the spacetime symmetry called local Lorentz symmetry. Some candidate models of quantum gravity contain the possibility that minuscule violations of spacetime symmetry may occur in nature. Generic violations of spacetime symmetry are described using an effective field theory framework. The PI will study the effective field theory framework, seeking solutions for signals for spacetime-symmetry violations in gravitational wave observations and other astrophysical systems like pulsars. Researchers involved in precision tests of GR, in particular gravitational wave tests, will find motivation and additional areas in which to search for novel effects and new physics beyond GR.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

量子物理学和爱因斯坦的广义相对论（GR）成功地描述了几乎所有已知的物理学。然而，物理学家推测，存在一个万物理论，可以统一这两个理论。最近流行的一种方法是识别这样一个统一理论的特征，这些特征可能会在敏感的实验和观察中产生新物理学的实验签名或证据。广义相对论的基本原理，例如空间中没有任何特殊的方向（空间的各向同性），可能在物理学统一理论的建议中被违反。 PI将研究打破空间各向同性的新类型信号，这些信号可以在对天体物理系统（如天文学）的敏感观测中测量，并测量被称为引力波的时空涟漪。该奖项将支持理论物理学的本科生研究机会。爱因斯坦等效原理（EEP）是GR的重要基础，包括称为局部洛伦兹对称的时空对称性。一些量子引力的候选模型包含了在自然界中发生时空对称性微小破坏的可能性。一般违反时空对称性描述使用一个有效的场论框架。 PI将研究有效场论框架，寻求引力波观测和其他天体物理系统（如天文学）中时空对称性破坏信号的解决方案。参与GR精确测试的研究人员，特别是引力波测试，将找到动力和额外的领域，在其中寻找新的影响和新的物理超越GR.这个奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持.