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We present a method based on acoustic wavenumber imaging algorithms to quantify the spectral content of strongly nonlinear energy scattering of a propagating wavefront across the discrete-continuum interface of a 2D hybrid system composed…

统计力学 · 物理学 2025-09-22 Joshua R. Tempelman , Chongan Wang , Alexander F. Vakakis

Graph neural networks (GNNs) are one of the most popular research topics for deep learning. GNN methods typically have been designed on top of the graph signal processing theory. In particular, diffusion equations have been widely used for…

机器学习 · 计算机科学 2023-06-16 Jeongwhan Choi , Seoyoung Hong , Noseong Park , Sung-Bae Cho

Diffusion of particles in complex fluids and gels is difficult to describe and often lies beyond the scope of the classical Stokes-Einstein relation. One of the main lines of research over the past few decades has sought to relate…

软凝聚态物质 · 物理学 2025-12-25 Władysław Sokołowski , Huma Jamil , Karol Makuch

The one dimensional (1D) driven quantum coupled pseudoforce system governing the dynamics of collective Langmuir electron oscillations is used in order to investigate the effects of variety of space charge distributions on plasmon…

等离子体物理 · 物理学 2019-03-27 M. Akbari-Moghanjoughi

Diffusion models, which convert noise into new data instances by learning to reverse a diffusion process, have become a cornerstone in contemporary generative modeling. In this work, we develop non-asymptotic convergence theory for a…

机器学习 · 计算机科学 2024-08-06 Gen Li , Yuting Wei , Yuejie Chi , Yuxin Chen

The rate of linear collisionless damping (Landau damping) in a classical electron gas confined to a heated ionized thin film is calculated. The general expression for the imaginary part of the dielectric tensor in terms of the parameters of…

光学 · 物理学 2009-11-10 D. F. Zaretsky , Ph. A. Korneev , S. V. Popruzhenko , W. Becker

We explain the Lorentz resonances in plasmonic crystals that consist of 2D nano dielectric inclusions as the interaction between resonant material properties and geometric resonances of electrostatic nature. One example of such plasmonic…

光学 · 物理学 2021-12-22 Wei Li , Robert Lipton , Matthias Maier

The flow of ions through permeable channels causes voltage drop in physiological nanodomains such as synapses, dendrites and dendritic spines, and other protrusions. How the voltage changes around channels in these nanodomains has remained…

软凝聚态物质 · 物理学 2025-01-10 Frédéric Paquin-Lefebvre , David Holcman

A theoretical foundation is developed for active seismic reconstruction of fractures endowed with spatially-varying interfacial condition (e.g.~partially-closed fractures, hydraulic fractures). The proposed indicator functional carries a…

地球物理 · 物理学 2017-04-05 Fatemeh Pourahmadian , Bojan B. Guzina , Houssem Haddar

We present a novel parametric finite element approach for simulating the surface diffusion of curves and surfaces. Our core strategy incorporates a predictor-corrector time-stepping method, which enhances the classical first-order temporal…

数值分析 · 数学 2024-12-17 Wei Jiang , Chunmei Su , Ganghui Zhang , Lian Zhang

We study the anomalous electromagnetic scattering in the homogenization regime, by a subwavelength thin layer of periodically distributed plasmonic nanoparticles on a perfect conducting plane. By using layer potential techniques, we derive…

偏微分方程分析 · 数学 2019-07-17 Habib Ammari , Bowen Li , Jun Zou

Nonlinear electron emission processes induced by surface plasmon oscillations have been studied both experimentally and theoretically. The measured above-threshold electron spectra extend up to energies whose appearance cannot be explained…

光学 · 物理学 2013-01-10 Sandor Varro , Norbert Kroo

We develop a consistent quantum description of surface plasmons interacting with quantum emitters and external electromagnetic field. Within the framework of macroscopic electrodynamics in dispersive and absorptive medium, we derive, in the…

介观与纳米尺度物理 · 物理学 2021-01-21 Tigran V. Shahbazyan

On the basis of the Blaizot-Iancu equations, which are a local formulation of the hard thermal loop (HTL) equations of motion for soft fluctuating quark and gluon fields and their induced sources, the coupled kinetic equations for plasminos…

高能物理 - 唯象学 · 物理学 2009-11-07 Yu. A. Markov , M. A. Markova

Using perturbation expansion of Maxwell equations, the amplitude equation is derived for nonlinear TM and TE surface plasmon waves supported by graphene. The equation describes interplay between in-plane beam diffraction and nonlinerity due…

光学 · 物理学 2013-01-29 A. V. Gorbach

Debye shielding, collisional transport, Landau damping of Langmuir waves, and spontaneous emission of these waves are introduced, in typical plasma physics textbooks, in different chapters. This paper provides a compact unified introduction…

等离子体物理 · 物理学 2012-11-26 Dominique Escande , Fabrice Doveil , Yves Elskens

This Letter introduces an approach for precisely designing surface friction properties using a conditional generative machine learning model, specifically a diffusion denoising probabilistic model (DDPM). We created a dataset of synthetic…

The aim of this paper is to give a mathematical justification of cloaking due to anomalous localized resonance (CALR). We consider the dielectric problem with a source term in a structure with a layer of plasmonic material. Using layer…

偏微分方程分析 · 数学 2012-05-29 Habib Ammari , Giulio Ciraolo , Hyeonbae Kang , Hyundae Lee , Graeme W. Milton

Surface diffusion of small adsorbates is analyzed in terms of the so-called intermediate scattering function and dynamic structure factor, observables in experiments using the well-known quasielastic Helium atom scattering and Helium spin…

统计力学 · 物理学 2018-09-26 S. Miret-Artés

A general solution to linearized Vlasov equation for an electron electrostatic wave in a homogeneous unmagnetized plasma is derived. The quasi-linear diffusion coefficient resulting from this solution is a continuous function of omega in…

等离子体物理 · 物理学 2015-10-15 Deng Zhou