Quantum Correlations, Separability, and Quantum Coherence Length in Equilibrium Many-Body Systems.

@article{Malpetti2016QuantumCS,
  title={Quantum Correlations, Separability, and Quantum Coherence Length in Equilibrium Many-Body Systems.},
  author={Daniele Malpetti and Tommaso Roscilde},
  journal={Physical review letters},
  year={2016},
  volume={117 13},
  pages={
          130401
        }
}
Nonlocality is a fundamental trait of quantum many-body systems, both at the level of pure states, as well as at the level of mixed states. Because of nonlocality, mixed states of any two subsystems are correlated in a stronger way than what can be accounted for by considering the correlated probabilities of occupying some microstates. In the case of equilibrium mixed states, we explicitly build two-point quantum correlation functions, which capture the specific, superior correlations of… 
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References

SHOWING 1-10 OF 21 REFERENCES

Atom interferometry

In this paper, we present a brief overview of atom interferometry. This field of research has developed very rapidly since 1991. Atom and light wave interferometers present some similarities but

Proceedings of the National Academy of Sciences, USA

Phys

  • Rev. A 40, 4277
  • 1989

Phys

  • Rev. A 77, 042303
  • 2008

and M

  • Greiner, Nature 528
  • 2015

Journal of Physics A: Mathematical and General 25

  • 3667
  • 1992

Phys

  • Rev. A 71, 052302
  • 2005

and T

  • Roscilde, in preparation
  • 2016

Phys

  • Rev. Lett. 88, 017901
  • 2001