Dissipative dynamics in quantum degenerate systems

The talk discusses qunatum dissipative dynamics in degenerate systems using the stochastic limit method, see [1]-[3]. We discuss currents in nonequilibrium quantum systems interacting with environment. We describe effects related to degeneracy in the system such as supertransport and possibility to manipulate quantum states. We investigate a variant of semiclassical model of laser and show that presence of coherent mode amplify transport between the states of the system, and consider application of this model to quantum photosynthesis.