Entanglement dynamics of a two-qutrits system coupled to a spin chain

In this paper, we investigate the entanglement dynamics of a two qutrits system interacting with a spin environment. Using negativity as the entanglement measure, we study the entanglement dynamics of the system. The calculations show that in cases where the entanglement decays quickly, the environment will have a quantum phase transition.
Comment: 10 pages, 9 figures