We generalize the recently developed diagrammatic Monte Carlo techniques for quantum
impurity models from an imaginary time to a Keldysh formalism suitable for real-time and …

We propose a numerical renormalization group (NRG) approach to steady-state currents
through nanodevices. A discretization of the scattering-states continuum ensures the correct …

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 …

We present a detailed comparison of three different methods designed to tackle non-
equilibrium quantum transport, namely the functional renormalization group (fRG), the time …

An emergent and promising tensor-network-based impurity solver is to represent the
Feynman-Vernon influence functional as a matrix product state, where the bath is integrated …

We give a detailed comparison of the hierarchical quantum master equation (HQME)
method to a continuous-time quantum Monte Carlo (CT-QMC) approach, assessing the …

The path integral formalism is the building block of many powerful numerical methods for
quantum impurity problems. However, existing fermionic path integral-based numerical …

We propose an efficient algorithm to numerically solve Anderson impurity problems using
matrix product states. By introducing a modified chain mapping we obtain significantly lower …

The Grassmann time-evolving matrix product operator (GTEMPO) method has proven to be
an accurate and efficient numerical method for the real-time dynamics of quantum impurity …

We employ the recently proposed scattering states numerical renormalization group (SNRG)
approach to calculate I (V) and the differential conductance through a single molecular level …