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.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2014|
|Event||7th International Conference on Gravitation and Cosmology, ICGC 2011 - Goa, India|
Duration: Dec 14 2011 → Dec 19 2011
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)