德西特晚期时边界上的幺正性
高能物理 - 理论
2020-06-30 v3 广义相对论与量子宇宙学
摘要
德西特时空的对称群在其幺正不可约表示中容纳了各种质量与自旋的场。这些幺正表示由自旋和对标度维数的权重贡献标记,并且根据场的质量与自旋,该权重可取纯实数或纯虚数值。本工作中,我们构造了在任意维度德西特时空中传播的有质量标量场的晚期时边界算符。我们表明,与反德西特的情况相反,纯虚权重以及实权重都对应于幺正算符,并辨识出相应的幺正表示。我们证明这些算符对应于晚期时边界算符,并阐明它们都具有正定范数。
引用
@article{arxiv.1912.09885,
title = {Unitarity at the Late time Boundary of de Sitter},
author = {Gizem Sengor and Constantinos Skordis},
journal= {arXiv preprint arXiv:1912.09885},
year = {2020}
}
备注
In accordance with an anonymous referee's suggestions minor additions have been made to the Introduction and Conclusions and the Conclusions section has been reorganized to make it more reader friendly. Published by JHEP