Abrupt changes in the dynamics of quantum disentanglement
F. Lastra, Guillermo Romero, C. López, Marcelo França Santos, J. C. Retamal · Physical Review A · 2007
The evolution of the lower bound of entanglement proposed by Chen et al. [Phys. Rev. Lett. 95, 210501 (2005)] in high-dimensional bipartite systems under dissipation is studied. Discontinuities for the time derivative of this bound are found depending on the initial conditions for entangled states. These abrupt changes along the evolution of the entanglement bound appear as precursors of sudden death.