来自宇宙学岛屿的线路复杂性
摘要
近来在各种理论工作中,利用量子极值岛屿(Quantum Extremal Islands)恢复蒸发黑洞的著名 Page 曲线取得了突破性进展,该方案旨在解决与幺正性相关的长期存在的黑洞信息丢失问题。受此概念启发,本文在负(或正)宇宙常数下、以 Friedmann-Lemaître-Robertson-Walker (FLRW) 时空为背景并存在辐射的情形中,研究存在(或不存在)量子极值岛屿时的宇宙学线路复杂性,即在分别具有 SO(2, 3) 与 SO(1, 4) 等距群的 anti-de Sitter 与 de Sitter 时空中岛屿的存在与缺失。在不使用任何具体引力模型细节的情况下,我们借助压缩态形式体系,针对上述 FLRW 时空中两种情形下标度因子的动力学宇宙学解,研究线路复杂性函数的行为。通过在不同参数空间中研究压缩态模式的宇宙学线路复杂性、OutOf-Time Ordered Correlators(无序时间序关联子)与纠缠熵,我们得出结论:这些度量不具有普适性。它们在不同的参数空间中呈现的显著差异表明其依赖于所考虑模型的参数。
引用
@article{arxiv.2012.10234,
title = {Circuit Complexity From Cosmological Islands},
author = {Sayantan Choudhury and Satyaki Chowdhury and Nitin Gupta and Anurag Mishara and Sachin Panneer Selvam and Sudhakar Panda and Gabriel D. Pasquino and Chiranjeeb Singha and Abinash Swain},
journal= {arXiv preprint arXiv:2012.10234},
year = {2021}
}
备注
75 pages, 29 figures, 4 tables, Dr. Sayantan Choudhury would like to dedicate this work to his lovable father and prime inspiration Professor Manoranjan Choudhury who recently have passed away due to COVID 19. Updated and revised version, Accepted for publication in Symmetry (section: Physics and Symmetry/Asymmetry, Special issue: Manifest and Hidden Symmetries in Field and String Theories)