1212.0546 (Guy Cohen et al.)

Numerically Exact Long Time Magnetization Dynamics at the Nonequilibrium
Kondo Crossover of the Anderson Impurity Model    [PDF]

Guy Cohen, Emanuel Gull, David R. Reichman, Andrew J. Millis, Eran Rabani

We investigate the dynamical and steady-state spin response of the nonequilibrium Anderson model to magnetic fields, bias voltage, and temperature using a numerically exact method combining a bold-line quantum Monte Carlo technique with the memory function formalism. We obtain converged results in a range of previously inaccessible regimes, in particular the crossover to the Kondo domain. We provide detailed predictions for novel nonequilibrium phenomena, including non-monotonic temperature dependence of observables at high bias voltage and oscillatory quench dynamics at high magnetic fields.

View original: http://arxiv.org/abs/1212.0546