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We present an efficient method for computing the zero frequency limit of transport coefficients in strongly coupled field theories described holographically by higher derivative gravity theories. Hydrodynamic parameters such as shear…

高能物理 - 理论 · 物理学 2010-02-23 Miguel F. Paulos

We calculate conductance through a quantum dot weakly coupled to metallic contacts by means of Keldysh out of equilibrium formalism. We model the quantum dot with the SU(2) Anderson model and consider the limit of infinite Coulomb…

强关联电子 · 物理学 2015-03-19 Leandro Tosi , Pablo Roura-Bas , Ana María Llois , Armando A. Aligia

We investigate the nonequilibrium phenomena through the quantum dot coupled to the normal and superconducting leads using a weak-coupling continuous-time Monte Carlo method. Calculating the time evolution of particle number, double…

强关联电子 · 物理学 2013-03-21 Akihisa Koga

We propose a Monte Carlo simulation to understand electron transport in a non-equilibrium steady state (\textit{NESS}) for the lattice Coulomb Glass model, created by continuous excitation of single electrons to high energies followed by…

无序系统与神经网络 · 物理学 2023-07-20 Preeti Bhandari , Vikas Malik , Moshe Schechter

Using the modified perturbation theory, we theoretically study the nonequilibrium Andreev transport through a quantum dot coupled to normal and superconducting leads (N-QD-S), which is strongly influenced by the Kondo and superconducting…

介观与纳米尺度物理 · 物理学 2015-03-18 Yasuhiro Yamada , Yoichi Tanaka , Norio Kawakami

We investigate the time-dependent, coherent, and dissipative dynamics of bound particles in single multilevel quantum dots in the presence of sequential tunnelling transport. We focus on the nonequilibrium regime where several channels are…

介观与纳米尺度物理 · 物理学 2010-02-11 Eduardo Vaz , Jordan Kyriakidis

The principle of maximum entropy (MaxEnt) applies to the canonical ensemble related to the number of particles, known as the $\mathcal{N}$-ensemble. This concept pertains to physical domains (or basins) that are treated as open systems…

量子物理 · 物理学 2025-09-19 Roberto Carlos Bochicchio

This study explores the use of neural network-based analytic continuation to extract spectra from Monte Carlo data. We apply this technique to both synthetic and Monte Carlo-generated data. The training sets for neural networks are…

无序系统与神经网络 · 物理学 2023-07-18 Kai-Wei Sun , Fa Wang

Some microscopic dynamics are also macroscopically irreversible, dissipating energy and producing entropy. For many-particle systems interacting with deterministic thermostats, the rate of thermodynamic entropy dissipated to the environment…

经典物理 · 物理学 2025-01-13 Swetamber Das , Jason R. Green

For an isotropic single-band system, it is well known that the semiclassical Boltzmann transport theory within the relaxation time approximation and the Kubo formula with the vertex corrections provide the same result with the…

介观与纳米尺度物理 · 物理学 2019-04-11 Sunghoon Kim , Seungchan Woo , Hongki Min

We consider constraint-coupled optimization problems in which agents of a network aim to cooperatively minimize the sum of local objective functions subject to individual constraints and a common linear coupling constraint. We propose a…

最优化与控制 · 数学 2019-07-26 Alessandro Falsone , Ivano Notarnicola , Giuseppe Notarstefano , Maria Prandini

We examine numerically the full spatio-temporal correlation functions for all hydrodynamic quantities for the random collision model introduced recently. The autocorrelation function of the heat current, through the Kubo formula, gives a…

统计力学 · 物理学 2009-11-10 J. M. Deutsch , Onuttom Narayan

We present an ab initio calculation of the DC conductivity of amorphous silicon and hydrogenated amorphous silicon. The Kubo-Greenwood formula is used to obtain the DC conductivity, by thermal averaging over extended dynamical simulation.…

材料科学 · 物理学 2009-11-13 T. A. Abtew , M. Zhang , D. A. Drabold

Based on a recent proposal [O.P. Sushkov, Phys. Rev. B 64, 155319 (2001)], we relate the quantum conductance through a sample in which electrons are strongly correlated to the persistent current of a large ring, composed of the sample and a…

The principle of maximum entropy is applied to the spectral analysis of a data signal with general variance matrix and containing gaps in the record. The role of the entropic regularizer is to prevent one from overestimating structure in…

数据分析、统计与概率 · 物理学 2012-02-16 Robert W. Johnson

A model is presented for the quantum transport of electrons, across finite atomic wire nanojunctions between electric leads, at zero bias limit. In order to derive the appropriate transmission and reflection spectra, familiar in the…

介观与纳米尺度物理 · 物理学 2012-07-10 D. Szczȩśniak , A. Khater

We study the sample complexity of entropic optimal transport in high dimensions using computationally efficient plug-in estimators. We significantly advance the state of the art by establishing dimension-free, parametric rates for…

统计理论 · 数学 2022-06-28 Philippe Rigollet , Austin J. Stromme

Magnetohydrodynamics of strongly magnetized relativistic fluids is derived in the ideal and dissipative cases, taking into account the breaking of spatial symmetries by a quantizing magnetic field. A complete set of transport coefficients,…

高能天体物理现象 · 物理学 2015-05-30 Xu-Guang Huang , Armen Sedrakian , Dirk H. Rischke

In most data-scientific approaches, the principle of Maximum Entropy (MaxEnt) is used to a posteriori justify some parametric model which has been already chosen based on experience, prior knowledge or computational simplicity. In a…

统计方法学 · 统计学 2022-06-29 Orestis Loukas , Ho Ryun Chung

Electronic transport through a two-level system driven by external electric field and coupled to (magnetic or non-magnetic) electron reservoirs is considered theoretically. The basic transport characteristics such as current and tunnel…

介观与纳米尺度物理 · 物理学 2015-05-18 Piotr Trocha
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