Long-range interacting quantum systems

N Defenu, T Donner, T Macrì, G Pagano, S Ruffo… - Reviews of Modern …, 2023 - APS
In this review recent investigations are summarized of many-body quantum systems with
long-range interactions, which are currently realized in Rydberg atom arrays, dipolar …

[HTML][HTML] Out-of-equilibrium dynamics of quantum many-body systems with long-range interactions

N Defenu, A Lerose, S Pappalardi - Physics Reports, 2024 - Elsevier
Experimental progress in atomic, molecular, and optical platforms in the last decade has
stimulated strong and broad interest in the quantum coherent dynamics of many long-range …

Statistical mechanics and dynamics of solvable models with long-range interactions

A Campa, T Dauxois, S Ruffo - Physics Reports, 2009 - Elsevier
For systems with long-range interactions, the two-body potential decays at large distances
as V (r)∼ 1/rα, with α≤ d, where d is the space dimension. Examples are: gravitational …

Strongly correlated flat-band systems: The route from Heisenberg spins to Hubbard electrons

O Derzhko, J Richter, M Maksymenko - International Journal of …, 2015 - World Scientific
On a large class of lattices (such as the sawtooth chain, the kagome and the pyrochlore
lattices), the quantum Heisenberg and the repulsive Hubbard models may host a completely …

Metastability and discrete spectrum of long-range systems

N Defenu - Proceedings of the National Academy of …, 2021 - National Acad Sciences
Long-lived quasi-stationary states (QSSs) are a signature characteristic of long-range
interacting systems both in the classical and in the quantum realms. Often, they emerge after …

Breaking of ensemble equivalence in networks

T Squartini, J de Mol, F den Hollander, D Garlaschelli - Physical review letters, 2015 - APS
It is generally believed that, in the thermodynamic limit, the microcanonical description as a
function of energy coincides with the canonical description as a function of temperature …

Comparing alternatives to the fixed degree sequence model for extracting the backbone of bipartite projections

ZP Neal, R Domagalski, B Sagan - Scientific reports, 2021 - nature.com
Projections of bipartite or two-mode networks capture co-occurrences, and are used in
diverse fields (eg, ecology, economics, bibliometrics, politics) to represent unipartite …

Meta-validation of bipartite network projections

G Cimini, A Carra, L Didomenicantonio… - Communications …, 2022 - nature.com
Monopartite projections of bipartite networks are useful tools for modeling indirect
interactions in complex systems. The standard approach to identify significant links is …

The ambiguity of nestedness under soft and hard constraints

M Bruno, F Saracco, D Garlaschelli, CJ Tessone… - Scientific reports, 2020 - nature.com
Many real networks feature the property of nestedness, ie the neighbours of nodes with a
few connections are hierarchically nested within the neighbours of nodes with more …

Complete analysis of ensemble inequivalence in the Blume-Emery-Griffiths model

VV Hovhannisyan, NS Ananikian, A Campa, S Ruffo - Physical Review E, 2017 - APS
We study inequivalence of canonical and microcanonical ensembles in the mean-field
Blume-Emery-Griffiths model. This generalizes previous results obtained for the Blume …