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Long-range enhanced mutual information from inflation
Physical Review D ( IF 5 ) Pub Date : 2021-02-26 , DOI: 10.1103/physrevd.103.043537
Llorenç Espinosa-Portalés , Juan García-Bellido

The quantum origin of cosmological primordial perturbations is a cornerstone framework in the interplay between gravity and quantum physics. In this paper, we study the mutual information between two spatial regions in a radiation-dominated universe filled by a curvature perturbation field in a squeezed state. We find an enhancement with respect to the usual mutual information of the Minkowski vacuum due to momentum modes affected by particle production during inflation. This result supports our previous claim of the existence of long-range correlations between primordial black holes (PBH) at formation during the radiation era.

中文翻译:

通货膨胀带来的远距离互助信息

宇宙学原始扰动的量子起源是引力与量子物理学之间相互作用的基石框架。在本文中,我们研究了受辐射控制的宇宙中两个空间区域之间的相互信息,这些空间由压缩状态下的曲率摄动场填充。我们发现,由于充气过程中受粒子产生影响的动量模式,Minkowski真空的通常相互信息得到了增强。这一结果支持了我们先前的说法,即辐射时代在形成时原始黑洞(PBH)之间存在远距离相关性。
更新日期:2021-02-26
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