1211.3241 (Anindya Biswas et al.)

Genuine Multipartite Entanglement Trends in Gapless-gapped Transitions
of Quantum Spin Systems    [PDF]

Anindya Biswas, R. Prabhu, Aditi Sen De, Ujjwal Sen

We investigate the behavior of a genuine multiparticle entanglement, viz. the generalized geometric measure, in gapless-to-gapped quantum transitions of one-dimensional and two-dimensional spin models.The investigations are performed in the exactly solvable one-dimensional XY models, as well as two-dimensional frustrated J1-J2 models, including the Shastry-Sutherland model. In particular, we find that multiparty entanglement acts as a better tool than the bipartite one in detecting such transitions in the frustrated quantum systems.

View original: http://arxiv.org/abs/1211.3241