Classical and quantum correlation of quantum fluctuation

被引：1
|
作者：
Nambu, Y. [1 ]
机构：
[1] Nagoya Univ, Grad Sch Sci, Dept Phys, Chikusa Ku, Nagoya, Aichi 4648602, Japan
来源：
VISHWA MIMANSA: AN INTERPRETATIVE EXPOSITION OF THE UNIVERSE. PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON GRAVITATION AND COSMOLOGY | 2014年 / 484卷
关键词：
SEPARABILITY; CRITERION;
D O I：
10.1088/1742-6596/484/1/012067
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have investigated the classical and quantum correlations of a quantum field in the inflationary universe using a particle detector model. We have found that the entanglement between two comoving detectors becomes zero after their physical separation exceeds the Hubble horizon. We have also found that the quantum discord, which is defined as the quantum part of total correlation, approaches zero on the super horizon scale.
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页数：5
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