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Open system simulations of quantum transport provide a platform for the study of true steady states, Floquet states, and the role of temperature, time-dynamics, and fluctuations, among other physical processes. They are rapidly gaining…

量子物理 · 物理学 2021-02-23 Michael Zwolak

We study transport through a one-dimensional quantum wire of correlated fermions connected to semi-infinite leads. The wire contains either a single impurity or two barriers, the latter allowing for resonant tunneling. In the leads the…

介观与纳米尺度物理 · 物理学 2007-05-23 T. Enss , V. Meden , S. Andergassen , X. Barnabe-Theriault , W. Metzner , K. Schoenhammer

We present a unified and simple method for deriving work theorems for classical and quantum Hamiltonian systems, both under equilibrium conditions and in a steady state. Throughout the paper, we adopt the partitioning of the total…

统计力学 · 物理学 2008-07-30 M. F. Gelin , D. S. Kosov

We present a new approach to treat correlations in nonequilibrium quantum many-particle system. The method is based on ideas of configuration interaction theory of exact nonperturbative ground state electronic structure calculations. We use…

介观与纳米尺度物理 · 物理学 2014-05-20 Alan A. Dzhioev , D. S. Kosov

We develop a theory for charge and spin current between two canted magnetic leads flowing through a quantum dot with an arbitrary local interaction. For a noncollinear magnetic configuration, we calculate equilibrium and nonequilibrium…

介观与纳米尺度物理 · 物理学 2014-12-16 Silas Hoffman , Yaroslav Tserkovnyak

We use a recently proved fluctuation theorem for the currents to develop the response theory of nonequilibrium phenomena. In this framework, expressions for the response coefficients of the currents at arbitrary orders in the thermodynamic…

统计力学 · 物理学 2015-05-13 D. Andrieux , P. Gaspard

Based on the super-fermion representation of quantum kinetic equations we develop nonequilibrium, post-Hartree-Fock many-body perturbation theory for the current through a region of interacting electrons. We apply the theory to out of…

介观与纳米尺度物理 · 物理学 2011-04-26 Alan A. Dzhioev , D. S. Kosov

The theoretical description of strongly correlated quantum systems out of equilibrium presents several challenges and a number of open questions persist. In this paper we focus on nonlinear electronic transport through an interacting…

强关联电子 · 物理学 2015-03-17 Prasenjit Dutt , Jens Koch , J. E. Han , Karyn Le Hur

Using non-equilibrium Green's functions, we derive a formula for the electron current through a lead-molecule-lead nanojunction where the interactions are not restricted to the central region, but are spread throughout the system, including…

介观与纳米尺度物理 · 物理学 2015-06-03 H. Ness , L. K. Dash

We study the electronic current through a quantum dot coupled to two superconducting leads which is driven by either a voltage $V$ or temperature $\Delta T$ bias. Finite biases beyond the linear response regime are considered. The local…

强关联电子 · 物理学 2014-06-12 Jan F. Rentrop , Severin G. Jakobs , Volker Meden

With this work we investigate the stationary nonequilibrium density matrix of current carrying nonequilibrium steady states of in-between quantum systems that are connected to reservoirs. We describe the analytical procedure to obtain the…

统计力学 · 物理学 2015-05-28 Abhishek Dhar , Keiji Saito , Peter Hanggi

We prove that a recently derived correlation equality between conserved charges and their associated conserved currents for quantum systems far from equilibrium [O.A. Castro-Alvaredo et al., Phys. Rev. X \textbf{6}, 041065 (2016)], is valid…

统计力学 · 物理学 2019-06-19 D. Karevski , G. M. Schütz

We propose an out-of-equilibrium impurity model for the dynamical mean-field description of the Hubbard model driven by a finite electric field. The out-of-equilibrium impurity environment is represented by a collection of equilibrium…

强关联电子 · 物理学 2013-03-14 Camille Aron , Cedric Weber , Gabriel Kotliar

We study consequences of gauge invariance and charge conservation of an electron gas in a strong random potential perturbed by a weak electromagnetic field. We use quantum equations of motion and Ward identities for one- and two-particle…

无序系统与神经网络 · 物理学 2008-09-16 V. Janis , J. Kolorenc , V. Spicka

Resonant tunnelling through an Anderson impurity is investigated by employing a new perturbation scheme at nonequilibrium. This new approach gives the correct weak and strong coupling limit in $U$ by introducing adjustable parameters in the…

强关联电子 · 物理学 2009-10-31 Luis Craco , Kicheon Kang

The analysis of nonlinear interaction of transversal electromagnetic field with quantum collisionless plasma is carried out. Formulas for calculation electric current in quantum collisionless plasma at any temperature are deduced. It has…

等离子体物理 · 物理学 2014-02-07 A. V. Latyshev , A. A. Yushkanov

Conventional transport theory is not really applicable to non-equilibrium systems which exhibit strong quantum effects. We present two different approaches to overcome this problem. Firstly we point out how transport equations may be…

高能物理 - 唯象学 · 物理学 2015-06-25 P. A. Henning , K. Nakamura , Y. Yamanaka

We discuss the energy current and the energy fluctuations in an isolated quantum wire driven far from equilibrium. The system consists of interacting spinless fermions and is driven by a time--dependent magnetic flux. The energy current is…

介观与纳米尺度物理 · 物理学 2014-10-28 Dawid Crivelli , Marcin Mierzejewski , Peter Prelovšek

We investigate the out-of-equilibrium properties of a simple quantum impurity model, the interacting resonant level model (IRLM). We focus on the scaling regime, where the bandwidth of the fermions in the leads is larger than all the other…

强关联电子 · 物理学 2017-12-06 Kemal Bidzhiev , Grégoire Misguich

We study the out-of-equilibrium current through an interacting quantum dot modelled as an Anderson impurity contacted by two BCS superconductors held at fixed voltage bias. In order to account for multiple Andreev reflections, we develop a…

超导电性 · 物理学 2008-03-26 L. Dell'Anna , A. Zazunov , R. Egger