Critical and noncritical long range entanglement in the Klein-Gordon field

Details Critical and noncritical long range entanglement in the Klein-Gordon field Critical and noncritical long range entanglement in the Klein-Gordon field

2008-11-08

arxiv.org/abs/0811.1288v1

Phys. Rev. A 80, 012325 (2009)

Physics

Quantum Physics

Scientific paper

We investigate the entanglement between two separated segments in the vacuum state of a free 1D Klein-Gordon field, where explicit computations are performed in the continuum limit of the linear harmonic chain. We show that the entanglement, which we measure by the logarithmic negativity, is finite with no further need for renormalization. We find that the quantum correlations decay much faster than the classical correlations as in the critical limit long range entanglement decays exponentially for separations larger than the size of the segments. As the segments become closer to each other the entanglement diverges as a power law. The noncritical regime manifests richer behavior, as the entanglement depends both on the size of the segments and on their separation. In correspondence with the von Neumann entropy long-range entanglement also distinguishes critical from noncritical systems.

Affiliated with

Also associated with

No associations

Rating

Critical and noncritical long range entanglement in the Klein-Gordon field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Critical and noncritical long range entanglement in the Klein-Gordon field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Critical and noncritical long range entanglement in the Klein-Gordon field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-483819