# 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…

## 12 Citations

### Coherence, entanglement, and quantumness in closed and open systems with conserved charge, with an application to many-body localization

- PhysicsPhysical Review A
- 2019

While the scaling of entanglement in a quantum system can be used to distinguish many-body quantum phases, it is usually hard to quantify the amount of entanglement in mixed states of open quantum…

### Genuine quantum correlations in quantum many-body systems: a review of recent progress

- PhysicsReports on progress in physics. Physical Society
- 2018

The aim of this work is to review the most recent developments regarding correlations in quantum many-body systems focussing on multipartite entanglement, quantum nonlocality, quantum discord, mutual information but also other non classical measures of correlations based on quantum coherence.

### Exponential clustering of bipartite quantum entanglement at arbitrary temperatures

- Physics
- 2021

Many inexplicable phenomena in low-temperature many-body physics are a result of macroscopic quantum eﬀects. Such macroscopic quantumness is often evaluated via long-range entanglement, that is,…

### Measures and applications of quantum correlations

- Physics, Computer Science
- 2016

This work gives an overview of the current quest for a proper understanding and characterisation of the frontier between classical and quantum correlations (QCs) in composite states, and focuses on various approaches to define and quantify general QCs, based on different yet interlinked physical perspectives.

### Structure of quantum entanglement at a finite temperature critical point

- Physics
- 2019

We propose a scheme to characterize long-range quantum entanglement close to a finite temperature critical point using tripartite entanglement negativity. As an application, we study a model with…

### Characterising two-sided quantum correlations beyond entanglement via metric-adjusted f-correlations.

- Physics
- 2016

We introduce an infinite family of quantifiers of quantum correlations beyond entanglement which vanish on both classical-quantum and quantum-classical states and are in one-to-one correspondence…

### Finite-temperature quantum discordant criticality

- PhysicsPhysical Review B
- 2022

Poetri Sonya Tarabunga, 2 Tiago Mendes-Santos, 1 Fabrizio Illuminati, and Marcello Dalmonte 2 The Abdus Salam International Centre for Theoretical Physics, strada Costiera 11, 34151 Trieste, Italy…

### Propagation of Waves and Particles Through Porous Structures (I)

- PhysicsJournal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
- 2019

The processes of the propagation of quantum and classical charged particles through porous films are studied. The propagation of quantum particles is analyzed by numerically calculating the…

### Quantum and classical correlations in open quantum-spin lattices via truncated-cumulant trajectories

- Physics
- 2022

,

### Penetration of Waves and Particles through Porous Structures

- Physics
- 2018

The penetration of quantum and classical charged particles through porous films is investigated. The passage of quantum particles is analyzed by numerically solving the Schrödinger equation. The…

## References

SHOWING 1-10 OF 21 REFERENCES

### Atom interferometry

- Physics
- 2006

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…

### 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