Nonequilibrium Statistical Mechanics
Nonequilibrium Statistical Mechanics. Instructor: Professor V. Balakrishnan, Department of Physics, IIT Madras. Thermal fluctuations, Langevin dynamics, Brownian motion and diffusion, Fokker-Planck equations, linear response theory, fluctuation-dissipation relations, the Boltzmann equation, critical phenomena, scaling and critical exponents. (from nptel.ac.in)
|Lecture 06 - Linear Response Theory (Part 1)|
Classical and quantum equations of motion in Hamiltonian dynamics. Liouville operator and its hermiticity. Unitarity of the time evolution operator. Density matrix; pure and mixed states. Liouville and von Neumann equations for the density operator. Expectation value of a physical observable.
Go to the Course Home or watch other lectures: