Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-04-26
Physics
Condensed Matter
Strongly Correlated Electrons
15 pages, 9 figures
Scientific paper
By mapping steady-state nonequilibrium to an effective equilibrium, we formulate nonequilibrium problems within an equilibrium picture where we can apply existing equilibrium many-body techniques to steady-state electron transport problems. We study the analytic properties of many-body scattering states, reduce the boundary condition operator in a simple form and prove that this mapping is equivalent to the correct linear-response theory. In an example of infinite-U Anderson impurity model, we approximately solve for the scattering state creation operators, based on which we derive the bias operator Y to construct the nonequilibrium ensemble in the form of the Boltzmann factor exp(-beta(H-Y)). The resulting Hamiltonian is solved by the non-crossing approximation. We obtain the Kondo anomaly conductance at zero bias, inelastic transport via the charge excitation on the quantum dot and significant inelastic current background over a wide range of bias. Finally, we propose a self-consistent algorithm of mapping general steady-state nonequilibrium.
No associations
LandOfFree
Mapping of strongly correlated steady-state nonequilibrium to an effective equilibrium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mapping of strongly correlated steady-state nonequilibrium to an effective equilibrium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mapping of strongly correlated steady-state nonequilibrium to an effective equilibrium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-505606