Fluctuation-dissipation theorems for systems in non-thermal equilibrium and applications Academic Article uri icon

abstract

  • The linear response theory of systems obeying Fokker-Planck equations is discussed under the assumption that the principle of detailed balance is satisfied. This theory is used to obtain fluctuation-dissipation theorems for systems in a non-thermal equilibrium state corresponding to the steady state solution of the Fokker-Planck equation. Some of the aspects of the threshold region of a single mode laser (without detuning) are discussed. In particular it is shown that, contrary to the results established recently by others, the "linear susceptibility" () is a continuous function of the pump parameter p. The results are then specialized to Gaussian Markov process in which case an alternate form of the fluctuation-dissipation theorems is also given. Finally few other generalizations of the fluctuation-dissipation theorems are also briefly discussed. 1972 Springer-Verlag.

published proceedings

  • Zeitschrift fr Physik A Hadrons and nuclei

author list (cited authors)

  • Agarwal, G. S.

citation count

  • 115

complete list of authors

  • Agarwal, GS

publication date

  • February 1972