High-precision test of isotropy of light propagation using actively rotated optical resonators

使用主动旋转光学谐振器高精度测试光传播的各向同性

• 批准号: 19760781
• 负责人: Professor Stephan Schiller, Ph.D.
• 金额: --
• 依托单位: Institut für Experimentalphysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/19760781?language=en
• 关键词: precision; test; isotropy; light; propagation

Local Lorentz Invariance (LLI) is a fundamental symmetry of nature that has until now experimentally been proven to be valid to a high degree. However, it is not known if LLI is strictly or only approximately valid. If a violation of LLI is found to exist, its detailed characterization could provide input for a fundamental theory of all forces. From the theoretical point of view, a violation of LLI is regarded as possible and models describing it have been proposed. For this reason there are worldwide efforts to perform more accurate experimental tests both on particles and on photons. Recently, we have performed the most precise (by a factor of 10) test of LLI for photons (Antonini et al., 2005), reaching the level (c/c < 6 ¿ 10-16.It is important to further improve this level by a few orders, since according to theoretical arguments, a possible level of LLI violation is given by the fundamental ratio Mw/Mplanck ( 1 ¿ 10-I7, where MW is the mass of the gauge bosons of the electroweak interaction. Our proposed experiment provides both the first and a strong test of Lorentz violation for photons (and non-spin contribution due to electrons) at this level.Within the proposed 3-year project we expect to:¿ improve the limits for a possible anisotropy of the velocity of light by a factor of 1000 to the level (c/c < 6 ¿ 10-19¿ measure 8 coefficients of the Standard Model extension theory with an accuracy between 100 and 1000 times higher than the currently best results, reaching a level of up to 2 ¿ 10-18.The experiment will be the first worldwide to explore LLI for photons at this level.The techniques we will develop will also make a significant contribution toward the development of ultrastable lasers suitable for next-generation optical atomic clocks.

局部洛仑兹不变性（LLI）是自然界的一种基本对称性，迄今为止已在实验上被证明是有效的。然而，目前还不知道LLI是严格有效还是近似有效。如果发现存在违反LLI的情况，其详细的表征可以为所有力的基本理论提供输入。从理论的角度来看，违反LLI被认为是可能的，并已提出了描述它的模型。因此，全世界都在努力对粒子和光子进行更精确的实验测试。最近，我们对光子进行了最精确的LLI测试（系数为10）（Antonini等人，重要的是进一步将这个水平提高几个数量级，因为根据理论论证，LLI破坏的可能水平由基本比率Mw/Mplanck（1 <$10-I7）给出，其中MW是电弱相互作用的规范玻色子的质量。我们提出的实验提供了第一个和强有力的测试光子的洛伦兹破坏在拟议的3年项目中，我们预计：<$将光速可能各向异性的限制提高1000倍，达到（c/c < 6 <$10 -19测量标准模型扩展理论的8个系数，精度比目前最好的结果高出100到1000倍，达到2？10- 18.该实验将是世界上第一个探索这一水平光子LLI的实验。我们将开发的技术也将为开发适用于下一代光学原子钟的超稳定激光器做出重大贡献。