Classical and quantum correlation of quantum fluctuation

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish
Article number012067
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2014
Externally publishedYes
Event7th International Conference on Gravitation and Cosmology, ICGC 2011 - Goa, India
Duration: Dec 14 2011Dec 19 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


Dive into the research topics of 'Classical and quantum correlation of quantum fluctuation'. Together they form a unique fingerprint.

Cite this