Naslov
The interplay between frustration and entanglement in many-body systems

Autori
Giampaolo, S. M. ; Simonov, K ; Capolupo, A ; Hiesmayr, B. C.

Izvornik
Journal of statistical mechanics-theory and experiment (1742-5468) 2018 (2018); 023101, 16

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, ostalo

Ključne riječi
frustration

Sažetak
Frustration of classical many-body systems can be used to distinguish ferromagnetic interactions from anti-ferromagnetic ones via the Toulouse conditions. A quantum version of the Toulouse conditions provides a similar classification based on the local ground states. We compute the global ground states for a family of models with Heisenberg-like interactions and analyse their behaviour with respect to frustration, entanglement and degeneracy. For that we develop analytical and numerical analysing tools capable of quantifying the interplay between those three quantities. We find that the quantum Toulouse conditions provide a proper classification, however, refinements can be found. Our results show how the different local ground states affect the interplay and pave the way for further generalisation and possible applications to other quantum many-body systems.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA