Nonequilibrium electron transport using the density matrix renormalization group

TL;DR

This paper extends the Density Matrix Renormalization Group method to analyze real-time electron transport in interacting one-dimensional systems, enabling detailed study of density excitations and nano-structure transport.

Contribution

The authors develop a new approach to apply the DMRG method for real-time dynamics in interacting electron systems, which was not previously possible.

Findings

Successful simulation of density excitation propagation

Analysis of electron transport through nano-structures

Demonstration of method's effectiveness in interacting systems

Abstract

We extended the Density Matrix Renormalization Group method to study the real time dynamics of interacting one dimensional spinless Fermi systems by applying the full time evolution operator to an initial state. As an example we describe the propagation of a density excitation in an interacting clean system and the transport through an interacting nano structure.