德西特时空中的体重构

IF 4.5 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics Letters B Pub Date : 2025-06-18 DOI:10.1016/j.physletb.2025.139655

Arundhati Goldar, Nirmalya Kajuri

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引用次数: 0

摘要

批量重建程序涉及将局部批量字段表示为边界上的非局部操作符。它是在AdS/CFT通信的背景下发起的。对于重（主级数）标量场，将其推广到德西特的尝试已经成功。在其他领域，建设遇到了问题。特别是，发现在高自旋场中出现散度。在本文中，我们解决了这些问题，并得到了所有质量标量和更高自旋场的边界表示。我们追溯了先前发现的散度的起源，并证明了涂抹函数在一定的质量、自旋和维数值下是分布的。我们还将构造从Bunch-Davies真空扩展到所有α-真空。

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Bulk reconstruction in de Sitter spacetime

The bulk reconstruction program involves expressing local bulk fields as non-local operators on the boundary. It was initiated in the context of AdS/CFT correspondence. Attempts to extend it to de Sitter have been successful for heavy (principal series) scalar fields. For other fields, the construction ran into issues. In particular, divergences were found to appear for higher spin fields. In this paper, we resolve these issues and obtain boundary representations for scalars of all masses as well as higher spin fields. We trace the origin of the previously discovered divergences and show that the smearing function becomes distributional for certain values of mass, spin and dimension. We also extend the construction from Bunch-Davies vacuum to all α-vacua.

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来源期刊

Physics Letters B 物理-物理：综合

CiteScore

9.10

自引率

6.80%

发文量

647

审稿时长

3 months

期刊介绍： Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.