Results 51 to 60 of about 9,449 (213)
Hyperuniformity and its generalizations
, 2016 Disordered many-particle hyperuniform systems are exotic amorphous states of matter that lie between crystal and liquid: They are like perfect crystals in the way they suppress large-scale density fluctuations and yet are like liquids or glasses in that ...
Torquato, Salvatore
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Nonlinear electromagnetic fields in strictly stationary spacetimes
, 2022 We prove two theorems which imply that any stationary nonlinear electromagnetic field obeying a dominant energy condition in a strictly stationary, everywhere regular, asymptotically flat spacetime must be either trivial or a stealth field.
Smolić, Ivica +2 more
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Higher gauge theories based on 3-groups
Journal of High Energy Physics, 2019 We study the categorical generalizations of a BF theory to 2BF and 3BF theories, corresponding to 2-groups and 3-groups, in the framework of higher gauge theory.
T. Radenković, M. Vojinović
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A Generalized Phase-Field System
Journal of Mathematical Analysis and Applications, 1999 The authors consider the problem \((\Omega\) bounded domain in \(\mathbb{R}^N\) with \(C^2\)-boundary) \[ \begin{aligned} {\partial u\over\partial t}+l {\partial \varphi\over\partial t}=\Delta u+f(x,t), \quad & (x,t)\in Q:=\Omega \times(0,T),\\ {\partial\varphi \over\partial t}=\Delta\varphi+ F(x,t,\varphi) +u,\quad & (x,t)\in Q,\\ {\partial u\over ...
Moroşanu, Costică, Motreanu, Dumitru
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Generalizations of Bent Functions. A Survey [PDF]
, 2011 Bent functions (Boolean functions with extreme nonlinearity properties) are actively studied for their numerous applications in cryptography, coding theory, and other fields.
Natalia Tokareva
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Representations of Lie algebras of vector fields on affine varieties
, 2019 For an irreducible affine variety X over an algebraically closed field of characteristic zero we define two new classes of modules over the Lie algebra of vector fields on X—gauge modules and Rudakov modules, which admit a compatible action of the ...
Futorny, Vyacheslav +10 more
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East European Journal of Physics, 2018 The solutions of generalized Klein-Gordon equations are considered. The generalizations of the Klein-Gordon equation allow one to derive convergent integrals for the Green functions of these equations.
Yu. V. Kulish
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Generalized far-field integral
Optics Express, 2021 The propagation of light in homogeneous media is a crucial technology in optical modeling and design as it constitutes a part of the vast majority of optical systems. Any improvements in accuracy and speed are therefore helpful. The far-field integral is one of the most widely used tools to calculate diffraction patterns.
Zongzhao Wang +3 more
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Asymptotic symmetries of three-dimensional black strings
Journal of High Energy Physics, 2019 We determine a consistent phase space for a theory consisting in the Einstein-Hilbert action coupled to matter fields (dilaton, one-form, two-form) and containing three-dimensional black strings (the Horne-Horowitz solution and generalizations thereof ...
Stéphane Detournay +2 more
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Characterization of cyclostationary signals and their generalizations
, 2015 In this section, cyclostationary signals are characterized and their spectral analysis is provided. Links between the considered statistical functions and quadratic time-frequency representations are highlighted.
Hlawatsch, F. +8 more
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