Quantum noise effects in strongly driven systems
For strongly driven systems where the coupling is weak and for frequencies near resonance, the Lax formula has proved to be an invaluable tool for calculating two-time correlation functions, as we have recently discussed in detail . Nevertheless, we also stressed that this does not imply a quantum generalization of the Onsager hypothesis but in fact that the correct quantum generalization of this hypothesis is the fluctuation dissipation theorem. Here we discuss the fluctuation-dissipation theorem in more detail (by expressing a general correlation function in terms of both a relaxation function and a response function) and the conditions under which it leads to the Onsager hypothesis.
Publication Source (Journal or Book title)
Ford, G., & O'Connell, R. (2001). Quantum noise effects in strongly driven systems. Laser Physics, 11 (1), 54-56. Retrieved from https://digitalcommons.lsu.edu/physics_astronomy_pubs/3918