Classical and Quantum Aspects of Black Holes, Horizons and Asymptotic Symmetries
黑洞、视界和渐近对称性的经典和量子方面
基本信息
- 批准号:1707938
- 负责人:
- 金额:$ 21万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-08-01 至 2021-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Strominger and collaborators will investigate the infinitely many symmetries of nature implied by the Einstein equations for the gravitational field and discovered under the last grant cycle. These arise at the boundaries of spacetime, both at infinite light like distances and near the horizon of a rapidly spinning black hole. The theoretical research has potential applications to gravitational waves, gravitational memory, upcoming astronomical observations at the Event Horizon telescope. The Event Horizon telescope is an initiative to create observations of black holes of unparalleled resolution using an array of radio antennas located across the globe. The work supported by this award will also tackle Hawking?s black hole information paradox, which posits that information may not be conserved in a black hole. In the last few years, this group has discovered an exact triangular equivalence of three phenomena which recur ubiquitously across a wide variety of physical systems and have been separately studied for over a half century: memory, soft theorems, and asymptotic symmetries. Soft theorems in quantum field theory relate any multi-particle scattering process with the insertion of a 'soft' (i.e. low-energy) particle such as a graviton to the same process without the soft particle.Asymptotic symmetries (such as BMS) are diffeomorphisms which act nontrivially on the physical data at infinity. The soft theorems can be derived as the quantum matrix elements of the conservation laws associated to the asymptotic symmetries. Hence they have the same physical content. The third corner of the triangle is closed by noting that The Braginsky-Thorne formula for the gravitational memory effect is precisely the Fourier transform in time of the Weinberg soft graviton theorem. There are many recurring instances of the triangle: in QED, Yang-Mills theory, gravity, in any number of dimensions, with or without supersymmetry, with leading, subleading or subsubleading soft theorems in one corner, and quantum triangles involving anomalies. This discovery of the equivalence of previously well-understood phenomena enables us to discover brand new phenomena. Given one corner of the triangle, we now know how to find the other two. This project investigates gravitational triangles. Applied to black holes, the triangular structure was shown to imply that, far from being bald featureless objects, even classical black holes carry an infinite head of 'soft hair'. The absence of any such distinguishing features was presumed in Hawking's 1975 argument for information loss, which is therefore invalidated. This insight suggests new lines of investigation into the black hole information paradox which the group will pursue. In another direction, astronomical observation suggests the existence of near-extreme Kerr black holes whose horizons spin at nearly the speed of light. General relativity implies that the dynamics of the high-redshift, near-horizon region of extreme Kerr, which includes the innermost stable circular orbit (ISCO), is governed by an infinite-dimensional emergent conformal symmetry. Symmetries of physical systems in general may both usefully characterize and have striking consequences for observational data. Precision black hole spectroscopy has advanced to the stage where astronomers are beginning to observe -- with a variety of ingenious methods -- the regions of spacetime governed by this conformal symmetry. The proposed project will undertake a systematic exploration of potential observational consequences of the conformal symmetry, in particular for the Event Horizon telescope which is already in the early stages of data collection.
斯特罗明格和合作者将研究爱因斯坦引力场方程所隐含的无限多的自然对称性,这些对称性是在上一个资助周期中发现的。它们出现在时空的边界,既有无限远的光,也有靠近快速旋转的黑洞视界的。理论研究对引力波,引力记忆,即将在事件视界望远镜进行的天文观测具有潜在的应用。“事件地平线”望远镜是一项倡议,利用遍布地球仪的无线电天线阵列,以无与伦比的分辨率观测黑洞。这个奖项所支持的工作也将解决霍金?黑洞信息悖论,它假定信息在黑洞中可能不守恒。在过去的几年里,这个小组已经发现了三种现象的精确三角等价性,这三种现象在各种各样的物理系统中普遍存在,并且已经被单独研究了半个多世纪:记忆,软定理和渐近对称性。量子场论中的软定理将任何多粒子散射过程与插入一个“软”(即低能)粒子(如引力子)到没有软粒子的相同过程联系起来。渐近对称性(如BMS)是一种非平凡作用于无穷远处物理数据的自同构。软定理可以作为与渐近对称性相关的守恒律的量子矩阵元导出。因此,它们具有相同的物理内容。三角形的第三个角是封闭的,注意到引力记忆效应的Braginsky-Thorne公式正是温伯格软引力子定理在时间上的傅里叶变换。三角形有许多反复出现的例子:在量子电动力学、杨-米尔斯理论、引力、任意维数、有或没有超对称性、在一个角上有主导、次主导或次次主导软定理,以及涉及异常的量子三角形。这一对先前已被充分理解的现象的等价性的发现使我们能够发现全新的现象。已知三角形的一角,我们现在知道如何找到另外两个角。这个项目研究引力三角形。应用于黑洞,三角形结构被证明意味着,即使是经典的黑洞,也远不是光秃秃的无特征的物体,而是携带着无限的“柔软的头发”。霍金在1975年关于信息丢失的论证中假设没有任何这样的区别特征,因此这是无效的。这一见解为研究小组将继续研究的黑洞信息悖论提供了新的研究思路。在另一个方向,天文观测表明存在接近极端的克尔黑洞,其视界以接近光速的速度旋转。广义相对论意味着极端克尔的高红移、近视界区域的动力学,包括最内层的稳定圆轨道(ISCO),是由无限维涌现共形对称所支配的。一般来说,物理系统的对称性既可以有效地表征观测数据,也可以对观测数据产生显著的影响。精确的黑洞光谱学已经发展到天文学家开始用各种巧妙的方法观察由这种共形对称控制的时空区域的阶段。拟议的项目将对共形对称性的潜在观测后果进行系统的探索,特别是对已经处于数据收集早期阶段的事件视界望远镜。
项目成果
期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Uplifting AdS3/CFT2 to flat space holography
- DOI:10.1007/jhep08(2019)168
- 发表时间:2019-05
- 期刊:
- 影响因子:5.4
- 作者:A. Ball;E. Himwich;S. Narayanan;S. Pasterski;A. Strominger
- 通讯作者:A. Ball;E. Himwich;S. Narayanan;S. Pasterski;A. Strominger
Celestial operator products of gluons and gravitons
- DOI:10.1142/9789811210679_0020
- 发表时间:2019-10
- 期刊:
- 影响因子:1.8
- 作者:M. Pate;A. Raclariu;A. Strominger;E. Y. Yuan
- 通讯作者:M. Pate;A. Raclariu;A. Strominger;E. Y. Yuan
Universal polarimetric signatures of the black hole photon ring
- DOI:10.1103/physrevd.101.084020
- 发表时间:2020-01
- 期刊:
- 影响因子:5
- 作者:E. Himwich;Michael D. Johnson;A. Lupsasca;A. Strominger
- 通讯作者:E. Himwich;Michael D. Johnson;A. Lupsasca;A. Strominger
Gravitational memory in higher dimensions
- DOI:10.1007/jhep06(2018)138
- 发表时间:2018-06
- 期刊:
- 影响因子:5.4
- 作者:M. Pate;A. Raclariu;A. Strominger
- 通讯作者:M. Pate;A. Raclariu;A. Strominger
State-operator correspondence in celestial conformal field theory
天体共形场论中的状态算子对应
- DOI:10.1007/jhep09(2021)132
- 发表时间:2021
- 期刊:
- 影响因子:5.4
- 作者:Crawley, Erin;Miller, Noah;Narayanan, Sruthi A.;Strominger, Andrew
- 通讯作者:Strominger, Andrew
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Andrew Strominger其他文献
Microcanonical quantum gravity
- DOI:
10.1007/bf00759942 - 发表时间:
1983-05-01 - 期刊:
- 影响因子:2.800
- 作者:
Andrew Strominger - 通讯作者:
Andrew Strominger
2 2 7 N ov 2 00 1 Les Houches Lectures on de Sitter Space ∗
2 2 7 N ov 2 00 1 Les Houches 德西特空间讲座 *
- DOI:
- 发表时间:
2001 - 期刊:
- 影响因子:0
- 作者:
Marcus Spradlin;Andrew Strominger;Anastasia Volovich - 通讯作者:
Anastasia Volovich
Conformal correlators on the Lorentzian torus
洛伦兹环面上的共形相关器
- DOI:
10.1103/physrevd.109.l101701 - 发表时间:
2024 - 期刊:
- 影响因子:5
- 作者:
Walker Melton;Atul Sharma;Andrew Strominger - 通讯作者:
Andrew Strominger
String theory and the Donaldson polynomial
- DOI:
10.1007/bf02096766 - 发表时间:
1993-01-01 - 期刊:
- 影响因子:2.600
- 作者:
Jeffrey A. Harvey;Andrew Strominger - 通讯作者:
Andrew Strominger
Andrew Strominger的其他文献
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{{ truncateString('Andrew Strominger', 18)}}的其他基金
Classical and Quantum Aspects of Black Holes, Horizons and Asymptotic Symmetries
黑洞、视界和渐近对称性的经典和量子方面
- 批准号:
1606536 - 财政年份:2016
- 资助金额:
$ 21万 - 项目类别:
Standard Grant
Classical and Quantum Aspects of Black Holes, Horizons and Asymptotic Symmetries
黑洞、视界和渐近对称性的经典和量子方面
- 批准号:
1205550 - 财政年份:2012
- 资助金额:
$ 21万 - 项目类别:
Continuing Grant
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Simulation and certification of the ground state of many-body systems on quantum simulators
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Classical and Quantum Aspects of Black Holes, Horizons and Asymptotic Symmetries
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