43. Schwinger-Keldysh: Martin-Siggia-Rose diagrammatics (non-equilibrium diagrammatic methods 2)
Posted by 
Dmitry
DmitryMay 14, 2008
I start to discuss Martin-Siggia-Rose diagrammatic methods and transition from Fokker-Planck equation back to quasiclassical Schwinger-Keldysh action.
39. Schwinger-Keldysh: Quasiclassical Keldysh action (non-equilibrium diagrammatic methods 1)
Posted by Dmitry
DmitryMay 9, 2008
I discuss quasi-classical approximation for the Schwinger-Keldysh action and show that the quasi-classical evolution is described by the Langevin equation.
