Quantum Gravity on the Inside

内部的量子引力

• 批准号: 2013873
• 负责人: David Kaplan
• 金额: $ 3.5万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2013873&HistoricalAwards=false
• 关键词: Quantum; Gravity; Inside

This award funds the research activities of Professor Jared Kaplan at Johns Hopkins University. For many years, physicists have been searching for a way to combine our understanding of the gravitational force, which is based on Einstein's theory of general relativity, with quantum mechanics. However, such a fusion gives rise to the so-called Black-Hole Information Paradox, which seems to challenge one of our most fundamental physical principles, namely the principle of locality, which states that objects can only interact if they are near each other. But just as Heisenberg's uncertainty principle was only a harbinger of all manner of quantum weirdness, the information paradox may presage other subtle violations of locality. The goal of Professor Kaplan's research is to study some of these exotic phenomena in order to determine if the laws of physics, and in particular the principle of locality, can be maintained near black holes. As a result, this research advances the national interest by promoting the progress of science towards the discovery and understanding of fundamental physical principles. This research project will also have broader impacts, as Professor Kaplan will involve graduate students in his research and plans to disseminate the results of this research through public talks. On a more technical level, Professor Kaplan aims to study locality in quantum gravity using the AdS/CFT correspondence. In particular, he will focus on the following questions: (1) How can the AdS/CFT correspondence make predictions for physical bulk observers beyond perturbation theory? (2) Are previously-discovered non-perturbative locality violations in (2+1)-dimensional AdS space robust and physical? (3) Can the impossibility of screening the gravitational field in AdS/CFT be demonstrated? Professor Kaplan will use the AdS/CFT correspondence, the conformal bootstrap, and Virasoro symmetry to perform explicit calculations that will help to address these questions. Professor Kaplan will also endeavor to interpret technical developments in CFT in terms of quantum gravity in AdS in order to shed light on the mysteries of black-hole evaporation and the limitations on locality in quantum gravity. Finally, Professor Kaplan will work to extend his results to higher dimensions and to more physically relevant spacetimes, including quantum gravitating cosmologies.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.

该奖项资助约翰·霍普金斯大学贾里德·卡普兰教授的研究活动。多年来，物理学家一直在寻找一种方法，将我们对引力的理解与量子力学结合起来。引力是基于爱因斯坦的广义相对论。然而，这种聚变产生了所谓的黑洞信息悖论，它似乎挑战了我们最基本的物理原理之一，即局部性原理，该原理指出，物体只有在彼此靠近的情况下才能相互作用。但是，就像海森伯格的测不准原理只是各种量子怪异的先兆一样，信息悖论可能预示着其他微妙的局域性违反。卡普兰教授的研究目标是研究其中一些奇异现象，以确定物理定律，特别是局部性原理能否在黑洞附近保持不变。因此，这项研究通过促进科学进步来发现和理解基本物理原理，从而促进了国家利益。这项研究项目也将产生更广泛的影响，因为卡普兰教授将让研究生参与他的研究，并计划通过公开演讲传播这项研究的结果。在更技术性的层面上，卡普兰教授的目标是使用ADS/CFT通信来研究量子引力中的局域性。他将特别关注以下问题：(1)ADS/CFT对应如何做出超越微扰理论的物理整体观测者的预测？(2)先前在(2+1)维ADS空间中发现的非微扰局域违规是稳健的和物理的吗？(3)ADS/CFT中不可能屏蔽引力场？卡普兰教授将使用ADS/CFT对应、共形自举和Virasoro对称性来执行有助于解决这些问题的显式计算。卡普兰教授还将努力在ADS中从量子引力的角度解释CFT的技术发展，以揭示黑洞蒸发的奥秘和量子引力中局域性的限制。最后，卡普兰教授将致力于将他的结果扩展到更高的维度和更具物理意义的时空，包括量子引力宇宙学。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Gravitational wave constraints on the observable inflation

• DOI: 10.1088/1475-7516/2021/01/053
• 发表时间: 2020-04
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: Erwin H. Tanin;Tommi Tenkanen

Causality constraints in large N QCD coupled to gravity

大 N QCD 与重力耦合的因果约束

• DOI: 10.1103/physrevd.104.l061901
• 发表时间: 2021
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Kaplan, Jared;Kundu, Sandipan
• 通讯作者: Kundu, Sandipan

Dirac neutrinos and N eff . Part II. The freeze-in case

狄拉克中微子和 N eff 。

• DOI: 10.1088/1475-7516/2021/03/082
• 发表时间: 2021
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: Luo, Xuheng;Rodejohann, Werner;Xu, Xun-Jie
• 通讯作者: Xu, Xun-Jie

Clockwork mechanism to remove superradiance limits

消除超辐射限制的发条机制

• DOI: 10.1103/physrevd.102.055015
• 发表时间: 2020
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Mathur, Anubhav;Rajendran, Surjeet;Tanin, Erwin H.
• 通讯作者: Tanin, Erwin H.

Ultraheavy dark matter search with electron microscopy of geological quartz

• DOI: 10.1103/physrevd.104.015041
• 发表时间: 2021-05
• 作者: R. Ebadi;A. Mathur;Erwin H. Tanin;N. Tailby;M. C. Marshall;A. Ravi;R. Trubko;R. Fu;D. Phillips