Exploration of the entropy quantities for a 3-party system using holography

We study the dynamics of composite open quantum systems strongly coupled to the environment after a quantum perturbation accompanied by non-equilibrium heating. Entanglement entropy quantities for a composite quantum system are considered, namely mutual information, tripartite information, total correlation and secrecy monotone. A holographic approach is used to calculate the time evolution of entanglement entropy during the non-equilibrium heating. We have found that the time dependence of these four quantities has specific behavior. Based on the joint work with I. Aref'eva and I. Volovich.