Entanglement halos
We introduce the concept of , a set of strongly entangled distant sites within the ground state of a quantum many-body system. Such halos emerge in starlike systems with exponentially decaying couplings, as we show using both free fermions and the spin-1/2 antiferromagnetic Heisenberg model. Depending on the central connectivity, entanglement halos may exhibit trivial and nontrivial symmetry-protected topological features. Our findings highlight how geometry and connectivity can generate complex entanglement structures with rich physical content, which can be experimentally accessible via state-of-the-art technologies.
Authors
- Nadir Samos Sáenz de Buruaga (ORCID: https://orcid.org/0000-0003-4360-5854)
- Germán Sierra (ORCID: https://orcid.org/0000-0003-3408-5682)
- Silvia N. Santalla (ORCID: https://orcid.org/0000-0002-6521-526X)
- Javier Rodríguez-Laguna (ORCID: https://orcid.org/0000-0003-2218-7980)
Institutions
- Consejo Superior de Investigaciones Científicas (ES)
- University of Lisbon (PT)
- Universidad Nacional de Educación a Distancia (ES)
- Universidade Politécnica de Lisboa (PT)
- Universidad Carlos III de Madrid (ES)
- Universidad Autónoma de Madrid (ES)
Publication Details
- Journal
- Physical Review Research
- Published
- 2025-12-31
- DOI
- https://doi.org/10.1103/fddq-8lzl
- Primary Topic
- Quantum many-body systems
- Type
- article
- Field-Weighted Citation Impact
- 0.00