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We consider a cable described by a discrete, space-homogeneous, quasi one-dimensional Schr\"odinger operator $H_0$. We study the scattering by a finite disordered piece (the scatterer) inserted inside this cable. For energies $E$ where…

数学物理 · 物理学 2012-01-04 Christian Sadel

Neural language models learn word representations, or embeddings, that capture rich linguistic and conceptual information. Here we investigate the embeddings learned by neural machine translation models, a recently-developed class of neural…

计算与语言 · 计算机科学 2015-04-06 Felix Hill , Kyunghyun Cho , Sebastien Jean , Coline Devin , Yoshua Bengio

An embedding is a function that maps entities from one algebraic structure into another while preserving certain characteristics. Embeddings are being used successfully for mapping relational data or text into vector spaces where they can…

人工智能 · 计算机科学 2019-02-28 Maxat Kulmanov , Wang Liu-Wei , Yuan Yan , Robert Hoehndorf

We start from the simple fact that the method of images can always be used to obtain {\Phi}_{\sigma} (r^\to_in), which is the potential inside conductor produced by induced surface charges. We use this fact to construct image method for…

经典物理 · 物理学 2010-12-08 Chyi-Lung Lin , Hsien-Yi Lin

The definitions and some basic properties of the linear transports along paths in vector bundles and the normal frames for them are recalled. The formalism is specified on line bundles and applied to a geometrical description of the…

数学物理 · 物理学 2007-11-01 Bozhidar Z. Iliev

We report on optically induced transport phenomena in freely suspended channels containing a two-dimensional electron gas (2DEG). The submicron devices are fabricated in AlGaAs/GaAs heterostructures by etching techniques. The photoresponse…

介观与纳米尺度物理 · 物理学 2011-07-25 C. Rossler , K. -D. Hof , S. Manus , S. Ludwig , J. P. Kotthaus , J. Simon , A. W. Holleitner , D. Schuh , W. Wegscheider

We investigate electron transport through a finite two dimensional mesoscopic periodic potential, consisting of an array of lateral quantum dots with electron density controlled by a global top gate. We observe a transition from an…

介观与纳米尺度物理 · 物理学 2015-06-23 Neal E. Staley , Nirat Ray , Marc A. Kastner , Micah P. Hanson , Arthur C. Gossard

Quantum communication theory focuses on the study of quantum channels for transmitting quantum information, where the transmission rate is measured by quantum channel capacity. This quantity exhibits several intriguing properties, such as…

量子物理 · 物理学 2025-01-14 Changchun Zhong

A transfunction is a function which maps between sets of finite measures on measurable spaces. In this paper we characterize transfunctions that correspond to Markov operators and to plans; such a transfunction will contain the…

泛函分析 · 数学 2020-01-16 Jason Bentley , Piotr Mikusiński

Ultrafunctions are a particular class of functions defined on a Non Archimedean field R^{*}\supset R. They have been introduced and studied in some previous works ([1],[2],[3]). In this paper we introduce a modified notion of ultrafunction…

泛函分析 · 数学 2014-01-22 Vieri Benci , Lorenzo Luperi Baglini

We have studied a one-dimensional channel with a wider, straight region irradiated by an external electromagnetic field. In this system the interplay between interference effects and resonance phenomena manifests itself and provides a new…

介观与纳米尺度物理 · 物理学 2009-10-31 S. Blom , L. Y. Gorelik

A wide variety of communication channels employ the quantized electromagnetic field to convey information. Their communication capacity crucially depends on losses associated to spatial characteristics of the channel such as diffraction and…

量子物理 · 物理学 2012-06-21 Cosmo Lupo , Vittorio Giovannetti , Stefano Pirandola , Stefano Mancini , Seth Lloyd

Hydrodynamics is a new paradigm of electron transport in high-mobility devices, where frequent electron collisions give rise to a collective electron flow profile. However, conventional descriptions of these flows, which are based on the…

介观与纳米尺度物理 · 物理学 2025-03-19 Nitay Ben-Shachar , Johannes Hofmann

Interatomic potentials approximate the potential energy of atoms as a function of their coordinates. Their main application is the effective simulation of many-atom systems. Here, we review empirical interatomic potentials designed to…

材料科学 · 物理学 2022-11-11 Martin H. Muser , Sergey V. Sukhomlinov , Lars Pastewka

This paper is concerned with the intrinsic geometric structures of conductive transmission eigenfunctions. The geometric properties of interior transmission eigenfunctions were first studied in [9]. It is shown in two scenarios that the…

偏微分方程分析 · 数学 2020-06-18 Huaian Diao , Xinlin Cao , Hongyu Liu

We study the classical problem of characterizing the channel capacity and its achieving distribution in a generic fashion. We derive a simple relation between three parameters: the input-output function, the input cost function and the…

信息论 · 计算机科学 2017-11-17 Jihad Fahs , Ibrahim Abou-Faycal

Probabilistic inference provides a language for describing how organisms may learn from and adapt to their environment. The computations needed to implement probabilistic inference often require specific representations, akin to having the…

分子网络 · 定量生物学 2018-06-28 Yarden Katz , Michael Springer , Walter Fontana

This work explores the use of joint density-functional theory, a new form of density-functional theory for the ab initio description of electronic systems in thermodynamic equilibrium with a liquid environment, to describe electrochemical…

材料科学 · 物理学 2015-06-05 Kendra Letchworth-Weaver , T. A. Arias

Entropic quantifiers of states lie at the cornerstone of the quantum information theory. While a quantum state can be abstracted as a device that only has outputs, the most general quantum device is a quantum channel that also has inputs.…

量子物理 · 物理学 2019-03-27 Xiao Yuan

Rapid progress in electrically-controlled plasmonics in solids poses a question about effects of electronic reservoirs on the properties of plasmons. We find that plasmons in electronically open systems [i.e. in (semi)conductors connected…

介观与纳米尺度物理 · 物理学 2020-12-03 Kirill Kapralov , Dmitry Svintsov