Results 61 to 70 of about 471,361 (266)
Electronic response of graphene to an ultrashort intense terahertz radiation pulse
New Journal of Physics, 2013 We have recently reported a study (Ishikawa 2010 Phys. Rev. B 82 201402) on a nonlinear optical response of graphene to a normally incident terahertz radiation pulse within the massless Dirac fermion (MDF) picture, where we have derived physically ...
Kenichi L Ishikawa
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Dynamics of a physically nonlinear viscoelastic cylindrical shell with a concentrated mass [PDF]
Инженерно-строительный журнал, 2019 It is known that the theory of linear and nonlinear elastic plates and shells is the most developed part of the theory of elasticity. In this area, the necessary equations are obtained and the methods to solve them are developed.
D.A. Khodzhaev +2 more
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NeuroImage, 2023 This paper introduces methods and a novel toolbox that efficiently integrates high-dimensional Neural Mass Models (NMMs) specified by two essential components. The first is the set of nonlinear Random Differential Equations (RDEs) of the dynamics of each
Anisleidy González Mitjans +10 more
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Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes
Advanced Functional Materials, EarlyView.This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin +7 more
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A graph-theoretic approach to sparse matrix inversion for implicit differential algebraic equations [PDF]
Mechanical Sciences, 2013 In this paper, we propose an efficient numerical scheme to compute sparse matrix inversions for Implicit Differential Algebraic Equations of large-scale nonlinear mechanical systems.
H. Yoshimura
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Low regularity well-posedness for some nonlinear Dirac equations in one space dimension
Differential and Integral Equations, 2010 We prove that the Cauchy problem for a nonlinear Dirac equation with vector self-interaction (Thirring model) and for a nonlinear system of two Dirac equations coupled through a vector-vector interaction (Federbusch model) are locally well-posed, in one ...
S. Selberg, Achenef Tesfahun
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Nonlinear Dirac equations and nonlinear gauge transformations
, 2003 Nonlinear Dirac equations (NLDE) are derived through a group N^2 of nonlinear (gauge) transformation acting in the corresponding state space. The construction generalises a construction for nonlinear Schr dinger equations. To relate N^2 with physically motivated principles we assume: locality (i.e. it contains no explicit derivative and no derivatives
Doebner, H. -D., Zhdanov, R.
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Multi-hump solitary waves of a nonlinear Dirac equation [PDF]
Communications in Mathematical Sciences, 2015 34 pages, 6 ...
Xu, Jian +3 more
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Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics
Advanced Functional Materials, EarlyView.Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha +18 more
wiley +1 more source
The Dirac equation as a linear tensor equation for one component
European Physical Journal C: Particles and FieldsThe Dirac equation is one of the most fundamental equations of modern physics. It is a spinor equation, but some tensor equivalents of the equation were proposed previously.
Andrey Akhmeteli
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