5 papers
Long-time fermionic quantum transport with controlled full-state error using an adaptive reservoir-mode window
Mikhail Umanskii, Nataliya Arefyeva, Georgy Sultanov +2
Real-time simulations of interacting nanostructures coupled to fermionic reservoirs can require a growing number of environmental degrees of freedom to retain long-lived correlatio…
Quantum Brownian Motion as a Classical Stochastic Process in Phase Space
Dmitriy Kondaurov, Evgeny Polyakov
We establish that the exact quantum dynamics of a Brownian particle in the Caldeira-Leggett model, with at most quadratic external potential, can be mapped, at any temperature, ont…
Emergence of non-Markovian Decoherent Histories in Integrable Environment: A "Tape Recorder" Model for Local Quantum Observables
Nataliya Arefyeva, Evgeny Polyakov
We propose a new approach to coarse-grained description of quantum evolution that provides an explicit recipe to construct and evaluate multi-time decoherent histories in a control…
Towards practical non-Markovianity measures: Normalization and regularization techniques
L. A. Mazhorina, N. D. Korolev, N. V. Morozov +15
Measures characterizing the non-Markovianity degree of the quantum dynamics have several drawbacks when applied to real devices. They depend on the chosen measurement time interval…
Towards out of equilibrium impurity solver for the Dynamical Mean Field Theory
A. Karpov, G. Sultanov, E. Polyakov +1
The Dynamical Mean Field Theory (DMFT) is a powerful tool for calculating highly correlated systems (both bosonic and fermionic) in a state of thermodynamic equilibrium. However, i…