Quench Dynamics of Entanglement in an Opened Anisotropic Spin-1/2 Heisenberg Chain

TL;DR

This paper investigates how entanglement evolves over time in an anisotropic spin-1/2 Heisenberg chain after different types of quantum quenches, revealing oscillatory behavior influenced by anisotropy.

Contribution

It introduces a detailed analysis of entanglement dynamics in an anisotropic XXZ model using adaptive t-DMRG for specific quench scenarios.

Findings

Entanglement between nearest qubits can be generated and oscillates post-quench.

Anisotropic interaction significantly affects oscillation frequency.

Entanglement dynamics depend on the type of quench performed.

Abstract

The quantum entanglement dynamics of a one-dimensional spin-1/2 anisotropic XXZ model is studied using the method of the adaptive time-dependent density-matrix renormalization-group when two cases of quenches are performed in the system. An anisotropic interaction quench and the maximum number of domain walls of staggered magnetization quench are considered. The dynamics of pairwise entanglement between the nearest two qubits in the spin chain is investigated. The entanglement of the two-spin qubits can be created and oscillates in both cases of the quench. The anisotropic interaction has a strong influence on the oscillation frequency of entanglement.