225 citations · 874 across the 19 of their papers we have counts for
4 papers · 1 filter
Equivalence of transport coefficients in bath-induced and dynamical scenarios
Robin Steinigeweg, Marcel Ogiewa, Jochen Gemmer
We investigate the transport of a single excitation through a chain of weakly coupled subunits. At both ends the chain is exposed to baths which are incorporated by means of a mast…
Density dynamics in translationally invariant spin-1/2 chains at high temperatures: a current auto-correlation approach to finite time- and length-scales
Robin Steinigeweg, Jochen Gemmer
We investigate transport in several translationally invariant spin-1/2 chains in the limit of high temperatures. We concretely consider spin transport in the anisotropic Heisenberg…
Density dynamics from current auto-correlations at finite time- and length-scales
Robin Steinigeweg, Hannu Wichterich, Jochen Gemmer
We consider the increase of the spatial variance of some inhomogeneous, non-equilibrium density (particles, energy, etc.) in a periodic quantum system of condensed matter-type. Thi…
Projection operator approach to transport in complex single-particle quantum systems
Robin Steinigeweg, Jochen Gemmer, Heinz-Peter Breuer +1
We discuss the time-convolutionless (TCL) projection operator approach to transport in closed quantum systems. The projection onto local densities of quantities such as energy, mag…