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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

The exact fermion master equation previously obtained in [Phys. Rev. B \textbf{78}, 235311 (2008); New J. Phys. \textbf{12}, 083013 (2010)] describes the dynamics of quantum states of a principal system of fermionic particles under the…

介观与纳米尺度物理 · 物理学 2015-03-19 Matisse Wei-Yuan Tu , Jian-Heng Liu , Wei-Min Zhang

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

A generalized Langevin equation with quantum baths (QMD) for thermal transport is derived with the help of nonequilibrium Green's function (NEGF) formulation. The exact relationship of the quasi-classical approximation to NEGF is…

介观与纳米尺度物理 · 物理学 2009-12-23 Jian-Sheng Wang , Xiaoxi Ni , Jin-Wu Jiang

We discuss the use of super-fermion formalism to represent and solve quantum kinetic equations for the electron transport problem. Starting with the Lindblad master equation for the molecule connected to two metal electrodes, we convert the…

介观与纳米尺度物理 · 物理学 2011-02-04 Alan A. Dzhioev , D. S. Kosov

Within the hierarchical quantum master equation (HQME) framework, an approach is presented, which allows a numerically exact description of nonequilibrium charge transport in nanosystems with strong electronic-vibrational coupling. The…

介观与纳米尺度物理 · 物理学 2016-11-23 C. Schinabeck , A. Erpenbeck , R. Härtle , M. Thoss

The interplay between interference effects and electron-electron interactions in electron transport through an interacting double quantum dot system is investigated using a hierarchical quantum master equation approach which becomes exact…

介观与纳米尺度物理 · 物理学 2013-12-24 R. Härtle , G. Cohen , D. R. Reichman , A. J. Millis

We provide a versatile analytical framework for calculating the dynamics of a spin system in contact with a fermionic bath beyond the Markov approximation. The approach is based on a second order expansion of the Nakajima-Zwanzig master…

介观与纳米尺度物理 · 物理学 2019-10-18 Stephanie Matern , Daniel Loss , Jelena Klinovaja , Bernd Braunecker

We derive a closed equation of motion for the one particle density matrix of a quantum system coupled to multiple baths using the Redfield master equation combined with a mean-field approximation. The steady-state solution may be found…

介观与纳米尺度物理 · 物理学 2020-09-30 Zekun Zhuang , Jaime Merino , J. B. Marston

We study the electron transport through the quantum dot coupled to the normal metal and BCS-like superconductor (N - QD - S) in the presence of the Kondo effect and Andreev scattering. The system is described by the single impurity Anderson…

介观与纳米尺度物理 · 物理学 2009-11-10 M. Krawiec , K. I. Wysokinski

We investigate the transport through a few-level quantum system described by a Markovian master equation with temperature- and particle-density dependent chemical potentials. From the corresponding Onsager relations we extract linear…

量子气体 · 物理学 2014-02-03 Christian Nietner , Gernot Schaller , Tobias Brandes

We investigate the quantum transport of the heat and the charge through a quantum dot coupled to fermionic contacts under the influence of time modulation of temperatures. We derive, within the nonequilibrium Keldysh Green's function…

介观与纳米尺度物理 · 物理学 2024-04-10 Rosa López , Pascal Simon , Minchul Lee

Non-equilibrium Green's function (NEGF) and quantum master equation (QME) are two main classes of approaches for electronic transport. We discuss various Floquet variances of these formalisms for transport properties of a quantum dot driven…

量子物理 · 物理学 2024-04-10 Vahid Mosallanejad , Yu Wang , Wenjie Dou

A perturbative quantum master equation is derived for a system interacting with its environment, which is more general than the ones derived before. Our master equation takes into account the effect of the energy exchanges between the…

统计力学 · 物理学 2009-11-10 M. Esposito , P. Gaspard

Understanding the behaviour of a quantum system coupled to its environment is of fundamental interest in the general field of quantum technologies. It also has important repercussions on foundational problems in physics, such as the process…

量子物理 · 物理学 2021-11-01 Sapphire Lally , Nicholas Werren , Jim Al-Khalili , Andrea Rocco

Based on our recent work on quantum transport [Li et al., Phys. Rev. B 71, 205304 (2005)], where the calculation of transport current by means of quantum master equation was presented, in this paper we show how an efficient calculation can…

材料科学 · 物理学 2009-11-11 JunYan Luo , Xin-Qi Li , YiJing Yan

We report on the derivation of the heat transport equation for nonmetals using a quantum Markovian master equation in Lindblad form. We first establish the equations of motion describing the time variation of the on-site energy of atoms in…

量子物理 · 物理学 2021-12-30 Yamen Hamdouni

The interrelationship between the non-Markovian stochastic Schr\"odinger equations and the corresponding non-Markovian master equations is investigated in the finite temperature regimes. We show that the general finite temperature…

量子物理 · 物理学 2007-05-23 Ting Yu

We present an analysis of the transient electronic and transport properties of a nanojunction in the presence of electron-electron and electron-phonon interactions. We introduce a novel numerical approach which allows for an efficient…

介观与纳米尺度物理 · 物理学 2018-09-13 R. Seoane Souto , R. Avriller , A. Levy Yeyati , A. Martín-Rodero

We aim to provide engineers with an introduction to the non-equilibrium Green's function (NEGF) approach, which provides a powerful conceptual tool and a practical analysis method to treat small electronic devices quantum mechanically and…

介观与纳米尺度物理 · 物理学 2007-05-23 M. P. Anantram , M. S. Lundstrom , D. E. Nikonov