Regensburg 2010 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 27: CE: Poster Session

TT 27.52: Poster

Mittwoch, 24. März 2010, 14:00–18:00, Poster D1

Eigenexcitation of Anderson impurity model out of equilibrium — •Pei Wang and Stefan Kehrein — Arnold Sommerfeld Center, department of physics, LMU

We solve the Anderson impurity model out of equilibrium by searching for the eigenexcitation operator A, which is defined as [H,A]=EA. We express the fermion creation and annihilation operators by eigenexcitation operator to calculate the time evolution. Then we transform back to calculate the expectation value. This method is compared to the flow equation method. It is better for considering the correction to eigen energy.