标题： 德西特时空中的体重建 显示英文标题

标题： Bulk Reconstruction in De Sitter Spacetime

摘要： 整体重建程序涉及将局部整体场表示为边界上的非局部算符。 它是在AdS/CFT对应关系的背景下提出的。 尝试将其扩展到de Sitter空间，对于重（主系列）标量场已经成功。 对于其他场，该构造遇到了问题。 特别是，发现高自旋场会出现发散。 在本文中，我们解决了这些问题，并获得了所有质量标量以及高自旋场的边界表示。 我们追溯了之前发现的发散的起源，并表明对于某些质量、自旋和维度值，平滑函数变为分布式的。 我们还将该构造从Bunch-Davies真空扩展到所有$\alpha$-真空。 显示英文摘要

摘要： 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 $\alpha$-vacua.