Ground state factorization and correlations with broken symmetry

Details Ground state factorization and correlations with broken symmetry Ground state factorization and correlations with broken symmetry

2010-12-20

arxiv.org/abs/1012.4270v2

Europhys. Lett. 96, 27002 (2011)

Physics

Quantum Physics

to be published in EPL

Scientific paper

10.1209/0295-5075/96/27002

We show how the phenomenon of factorization in a quantum many body system is of collective nature. To this aim we study the quantum discord $Q$ in the one dimensional XY model in a transverse field. We analyze the behavior of $Q$ at both the critical point and at the non critical factorizing field. The factorization is found to be governed by an exponential scaling law for $Q$. We also address the thermal effects fanning out from the anomalies occurring at zero temperature. Close to the quantum phase transition, $Q$ exhibits a finite-temperature crossover with universal scaling behavior, while the factorization phenomenon results in a non trivial pattern of correlations present at low temperature.

Affiliated with

Also associated with

No associations

Rating

Ground state factorization and correlations with broken symmetry 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 Ground state factorization and correlations with broken symmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground state factorization and correlations with broken symmetry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-453041