A modified Newton´s method for rational Riccati equations arising in stochastic control

We consider the solution of the rational matrix equations, or generalized algebraic Riccati equations with rational terms, arising in stochastic optimal control in continuous- and discrete-time. Fixed-point iteration and (modified) Newton´s methods will be considered. In particular, the convergence results of a new modified Newton´s method, for both continuous- and discrete-time rational Riccati equations, will be presented.