Monogamy and ground-state entanglement in highly connected systems

Alessandro Ferraro*, Artur Garcia-Saez, Antonio Acin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


We consider the ground-state entanglement in highly connected many-body systems consisting of harmonic oscillators and spin-1/2 systems. Varying their degree of connectivity, we investigate the interplay between the enhancement of entanglement, due to connections, and its frustration, due to monogamy constraints. Remarkably, we see that in many situations the degree of entanglement in a highly connected system is essentially of the same order as in a low connected one. We also identify instances in which the entanglement decreases as the degree of connectivity increases.

Original languageEnglish
Article number052321
Number of pages7
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Issue number5
Publication statusPublished - Nov 2007



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