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Self-energy method for time-dependent spectral functions of the Anderson impurity model within the time-dependent numerical renormalization group approach
H. T. M. Nghiem, T. A. Costi
The self-energy method for quantum impurity models expresses the correlation part of the self-energy in terms of the ratio of two Green's functions and allows for a more accurate c…
Time-dependent spectral functions of the Anderson impurity model in response to a quench with application to time-resolved photoemission spectroscopy
H. T. M. Nghiem, H. T. Dang, T. A. Costi
We investigate several definitions of the time-dependent spectral function of the Anderson impurity model following a quench and within the time-dependent numerical renorm…
Magnetic field dependence of the thermopower of Kondo-correlated quantum dots: Comparison with experiment
T. A. Costi
Signatures of the Kondo effect in the electrical conductance of strongly correlated quantum dots are well understood both experimentally and theoretically, while those in the therm…
Magnetic field dependence of the thermopower of Kondo-correlated quantum dots
T. A. Costi
Recent experiments have measured the signatures of the Kondo effect in the zero-field thermopower of strongly correlated quantum dots [Svilans {\em et al.,} Phys. Rev. Lett. {\bf 1…
Nonequilibrium thermoelectric transport through vibrating molecular quantum dots
A. Khedri, T. A. Costi, V. Meden
We employ the functional renormalization group to study the effects of phonon-assisted tunneling on the nonequilibrium steady-state transport through a single level molecular quant…
Time-dependent numerical renormalization group method for multiple quenches: towards exact results for the long time limit of thermodynamic observables and spectral functions
H. T. M. Nghiem, T. A. Costi
We develop an alternative time-dependent numerical renormalization group (TDNRG) formalism for multiple quenches and implement it to study the response of a quantum impurity system…