Holography and the Swampland: Constraints on theories of fundamental physics from compatibility with quantum gravity

全息术和沼泽地：与量子引力相容性对基础物理理论的限制

• 批准号: 471314740
• 负责人: Professor Dr. Dieter Lüst
• 金额: --
• 依托单位: Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)
• 依托单位国家: 德国
• 项目类别: DIP Programme
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/471314740?language=en
• 关键词: Holography; Swampland; Constraints; theories; fundamental

Fundamental physics is built on the two pillars of General Relativity, our theory of gravitation, and QuantumMechanics, our theory of the sub-atomic world. The two theories are, however, incompatible in their currentform. A central problem in physics, with relevance for a spectrum of questions from black holes to dark energy,is how to unify them into a single theory of Quantum Gravity. Recently, it has been understood that a viableand productive approach to studying quantum gravity is by determining general principles which any theory ofquantum gravity must satisfy. For example, there is strong evidence that in any quantum theory of gravity,gravity must always be the weakest force (the Weak Gravity Conjecture). This approach to studying quantumgravity has been termed the Swampland program.The project is set within the Swampland program of research: its aim is to establish general principles ofquantum gravity and to determine how they constrain physical theories. We propose, however, to introduce afundamentally new approach to the topic. Specifically, our primary methodology will be to utilise the principleof gravitational holography (or AdS/CFT), which states that gravity is dual to a non-gravitational theory in oneless dimension. To this end we propose to form, for the first time, a large-scale collaboration bringing togetherexperts in the Swampland and Holography. This will open up two new pathways for progress: First, it will allowus to constrain quantum theories of gravity through constraints on the holographic quantum field theory duals.We can then bring new techniques to bear on the topic, from the bootstrap program to quantum informationtheory. Second, it will provide new tools for establishing the physics underlying the conjectured Swamplandconstraints. We will further supplement this methodology by testing the proposed quantum gravity constraintsin string theory, and by utilising the framework of the corpuscular description of gravity.The results of the research will yield a more robust, general, and microscopic understanding of the constraintsquantum gravity imposes on physical theories. They will change how we construct theories of new physics, forexample, constraining theories of cosmological inflation. They will elucidate the physics of de Sitter and AntideSitter spaces in quantum gravity, a question which is relevant for the nature of dark energy and the fate ofour universe. The role of holography will also allow us to expand the impact of our work: following the oppositedirection, we can convert constraints on quantum gravity into dual constraints on field theory, teaching us aboutaspects of non-gravitational theories and potentially forming connections to quantum information theory.

基础物理学是建立在广义相对论的两大支柱上的，我们的引力理论，以及量子力学，我们的亚原子世界理论。然而，这两种理论在目前的形式下是不相容的。物理学中的一个中心问题，与从黑洞到暗能量的一系列问题有关，是如何将它们统一到一个单一的量子引力理论中。最近，人们已经认识到，研究量子引力的一个可行的和富有成效的方法是确定任何量子引力理论必须满足的一般原则。例如，有强有力的证据表明，在任何引力的量子理论中，引力总是最弱的力（弱引力猜想）。这种研究量子引力的方法被称为“沼泽地计划”。该项目是在沼泽地研究计划中设立的：其目的是建立量子引力的一般原理，并确定它们如何约束物理理论。然而，我们建议对这一专题采用一种根本性的新方法。具体地说，我们的主要方法将是利用引力全息（或AdS/CFT）的原理，该原理指出，引力是一个无量纲的非引力理论的对偶。为此，我们建议首次形成一个大规模的合作，将沼泽地和全息摄影的专家聚集在一起。这将开辟两条新的进展途径：首先，它将允许我们通过对全息量子场论的约束来约束引力的量子理论。然后，我们可以引入新的技术来解决这个问题，从自助程序到量子信息论。第二，它将提供新的工具，建立物理基础的封闭沼泽地的约束。我们将进一步补充这一方法，通过测试所提出的量子引力约束弦理论，并利用引力的微粒描述的框架，研究结果将产生一个更强大的，一般的，和微观的理解的约束quantum引力强加在物理理论。它们将改变我们构建新物理学理论的方式，例如，宇宙膨胀的约束理论。他们将阐明量子引力中德西特和反德西特空间的物理学，这是一个与暗能量的性质和我们宇宙的命运有关的问题。全息术的作用也将使我们能够扩大我们工作的影响：沿着相反的方向，我们可以将量子引力的约束转化为场论的双重约束，教我们非引力理论的一些方面，并可能与量子信息理论形成联系。