Intrinsic relation between ground-state fidelity and the characterization of a quantum phase transition

Details Intrinsic relation between ground-state fidelity and the characterization of a quantum phase transition Intrinsic relation between ground-state fidelity and the characterization of a quantum phase transition

2007-12-29

arxiv.org/abs/0801.0020v2

Phys. Rev. A 77, 032111 (2008)

Physics

Condensed Matter

Other Condensed Matter

5 pages, 3 figures

Scientific paper

10.1103/PhysRevA.77.032111

The notion of fidelity in quantum information science has been recently applied to analyze quantum phase transitions from the viewpoint of the ground state (GS) overlap for various many-body systems. In this work, we unveil the intrinsic relation between the GS fidelity and the derivatives of GS energy and find that they play equivalent role in identifying the quantum phase transition. The general connection between the two approaches enables us to understand the different singularity and scaling behaviors of fidelity exhibited in various systems on general grounds. Our general conclusions are illustrated via several quantum spin models which exhibit different kinds of QPTs.

Affiliated with

Also associated with

No associations

Rating

Intrinsic relation between ground-state fidelity and the characterization of a quantum phase transition 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 Intrinsic relation between ground-state fidelity and the characterization of a quantum phase transition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intrinsic relation between ground-state fidelity and the characterization of a quantum phase transition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-259285