Entanglement Entropy in Quantum Networks with Tunable Geometry
Quantum Physics
2026-07-17 v1
Abstract
Quantum many-body Hamiltonians with two-body interactions can be represented by graphs, with sites as nodes and two-site couplings as edges. We investigate how the geometry of these graphs affects transport and entanglement growth. To do so, we study dynamics for quantum hopping on a random graph model with an effective range parameter. Tuning it, we interpolate between nearest-neighbor and all-to-all graphs, identifying a new localization regime that is robust in both single-particle and finite-density cases. This provides a model of Anderson localization induced by structural disorder, with implications for amorphous materials and tunable-range analog quantum simulators.
Cite
@article{arxiv.2607.16394,
title = {Entanglement Entropy in Quantum Networks with Tunable Geometry},
author = {Andrea Azzali and Sridevi Kuriyattil and Andrew J. Daley and Marilù Chiofalo},
journal= {arXiv preprint arXiv:2607.16394},
year = {2026}
}