15 citations · 21 across the 2 of their papers we have counts for
3 papers · 1 filter
The connection between time-local and time-nonlocal perturbation expansions
K. Nestmann, M. R. Wegewijs
There exist two canonical approaches to describe open quantum systems by a time-evolution equation: the Nakajima-Zwanzig quantum master equation, featuring a time-nonlocal memory k…
Fermionic duality: General symmetry of open systems with strong dissipation and memory
V. Bruch, K. Nestmann, J. Schulenborg +1
We consider the exact time-evolution of a broad class of fermionic open quantum systems with both strong interactions and strong coupling to wide-band reservoirs. We present a nont…
Five approaches to exact open-system dynamics: Complete positivity, divisibility and time-dependent observables
Viktor Reimer, Maarten Rolf Wegewijs, Konstantin Nestmann +1
To extend the classical concept of Markovianity to an open quantum system, different notions of the divisibility of its dynamics have been introduced. Here we analyze this issue by…