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 …

Criticality of spin systems with weak long-range interactions

N Defenu, A Codello, S Ruffo… - Journal of Physics A …, 2020 - iopscience.iop.org
The study of critical properties of systems with long-range interactions has attracted, in
recent decades, a continuing interest and motivated the development of several analytical …

Criticality and phase diagram of quantum long-range O() models

N Defenu, A Trombettoni, S Ruffo - Physical Review B, 2017 - APS
Several recent experiments in atomic, molecular, and optical systems motivated a huge
interest in the study of quantum long-range systems. Our goal in this paper is to present a …

Ensemble inequivalence in long-range quantum systems

N Defenu, D Mukamel, S Ruffo - Physical Review Letters, 2024 - APS
Ensemble inequivalence, ie, the possibility of observing different thermodynamic properties
depending on the statistical ensemble which describes the system, is one of the hallmarks of …

Emergent self-duality in a long-range critical spin chain: From deconfined criticality to first-order transition

S Yang, Z Pan, DC Lu, XJ Yu - Physical Review B, 2023 - APS
Over the past few decades, tremendous efforts have been devoted to understanding self-
duality at the quantum critical point, which enlarges the global symmetry and constrains the …

Finite-size versus finite-temperature effects in the critical long-range O (N) model

D Benedetti, R Gurau, S Harribey, D Lettera - Journal of High Energy …, 2024 - Springer
A bstract In this paper we consider classical and quantum versions of the critical long-range
O (N) model, for which we study finite-size and finite-temperature effects, respectively, at …

Berezinskii-Kosterlitz-Thouless phase transitions with long-range couplings

G Giachetti, N Defenu, S Ruffo, A Trombettoni - Physical Review Letters, 2021 - APS
The Berezinskii-Kosterlitz-Thouless (BKT) transition is the paradigmatic example of a
topological phase transition without symmetry breaking, where a quasiordered phase …

Out-of-equilibrium phase diagram of long-range superconductors

P Uhrich, N Defenu, R Jafari, JC Halimeh - Physical Review B, 2020 - APS
Within the ultimate goal of classifying universality in quantum many-body dynamics,
understanding the relation between out-of-equilibrium and equilibrium criticality is a crucial …

Dynamic critical exponent in quantum long-range models

D Benedetti, R Gurau, D Lettera - Physical Review B, 2024 - APS
Quantum long-range models at zero temperature can be described by fractional Lifshitz field
theories, that is, anisotropic models whose actions are short range in time and long range in …

Universality in long-range interacting systems: The effective dimension approach

A Solfanelli, N Defenu - Physical Review E, 2024 - APS
Dimensional correspondences have a long history in critical phenomena. Here, we review
the effective dimension approach, which relates the scaling exponents of a critical system in …