There and Back Again: Mapping and Factorizing Cosmological Observables

IF 8.1 1区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
David Stefanyszyn, Xi Tong, Yuhang Zhu
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引用次数: 0

Abstract

Cosmological correlators encode invaluable information about the wave function of the primordial Universe. In this Letter we present a duality between correlators and wave function coefficients that is valid to all orders in the loop expansion and manifests itself as a Z4 symmetry. To demonstrate the power of the duality, we derive a correlator-to-correlator factorization formula for the parity-odd part of cosmological correlators that relates n-point observables to lower-point ones via a series of diagrammatic cuts. These relations serve as the first example of physically testable cutting rules as they involve observables defined for arbitrary physical kinematics. We further show how the duality allows us to translate the cosmological optical theorem for wave function coefficients into statements about cosmological correlators. Published by the American Physical Society 2024
去而复返:宇宙观测的映射和分解
宇宙学相关器编码了关于原始宇宙波函数的宝贵信息。在这封信中,我们提出了相关器和波函数系数之间的对偶性,该对偶性对环路展开中的所有阶有效,并表现为Z4对称。为了证明对偶性的力量,我们推导了一个宇宙相关器的奇偶部分的相关器-相关器分解公式,该公式通过一系列图解切割将n点可观测值与较低点的可观测值联系起来。这些关系作为物理可测试切割规则的第一个例子,因为它们涉及为任意物理运动学定义的可观察对象。我们进一步展示了对偶性如何允许我们将波函数系数的宇宙学光学定理转化为关于宇宙相关器的陈述。2024年由美国物理学会出版
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Physical review letters
Physical review letters 物理-物理:综合
CiteScore
16.50
自引率
7.00%
发文量
2673
审稿时长
2.2 months
期刊介绍: Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks
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