Tensor-network approach to compute genuine multisite entanglement in infinite quantum spin chains

Roy, Sudipto Singha ; Dhar, Himadri Shekhar ; Sen(De), Aditi ; Sen, Ujjwal (2019) Tensor-network approach to compute genuine multisite entanglement in infinite quantum spin chains Physical Review A, 99 (6). ISSN 0031-899X (print); 1536-6065 (web)

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Official URL: https://doi.org/10.1103%2Fphysreva.99.062305

Abstract

We devise a method based on the tensor-network formalism to calculate genuine multisite entanglement in ground states of infinite spin chains containing spin-1/2 or spin-1 quantum particles. The ground state is obtained by employing an infinite time-evolving block decimation method acting upon an initial matrix product state for the infinite spin system. We explicitly show how such infinite matrix product states with translational invariance provide a natural framework to derive the generalized geometric measure, a computable measure of genuine multisite entanglement, in the thermodynamic limit of quantum many-body systems with both spin-1/2 and higher-spin particles.

Item Type:Article
ID Code:125719
Deposited On:12 Oct 2022 09:19
Last Modified:12 Oct 2022 09:19

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