About nonlinear theory of two-cavity klystron with a drift space in the form of medium with complex permittivity [PDF]
Известия высших учебных заведений: Прикладная нелинейная динамика, 2020 The purpose of this work is to construct an approximate nonlinear theory of a klystron amplifier in which a medium with complex conductivity or with metamaterials with negative permittivity is located between the input and output cavities instead of the ...
Funtov, Aleksandr Andreevich
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Complex Hypersurfaces in an Indefinite Complex Space Form
Tokyo Journal of Mathematics, 1987 Let M be a complex hypersurface of index 2s in an \((n+1)\)-dimensional indefinite complex space form of constant holomorphic sectional curvature c(\(\neq 0)\) and of index \(2(s+a),\) where \(a=0\) or 1. The authors prove that M is Einstein if M satisfies \(R(X,Y)\cdot S=0\) where R and S denote the curvature tensor and the Ricci tensor, respectively.
AIYAMA, Reiko +3 more
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Quantum theory of reactive scattering in phase space [PDF]
, 2010 We review recent results on quantum reactive scattering from a phase space perspective. The approach uses classical and quantum versions of normal form theory and the perspective of dynamical systems theory.
Brandas, E +17 more
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A Comprehensive Survey on Parallel Submanifolds in Riemannian and Pseudo-Riemannian Manifolds
Axioms, 2019 A submanifold of a Riemannian manifold is called a parallel submanifold if its second fundamental form is parallel with respect to the van der Waerden−Bortolotti connection.
Bang-Yen Chen
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Real hypersurfaces with constant totally real sectional curvature in a complex space form [PDF]
, 2000 summary:We characterize real hypersurfaces with constant holomorphic sectional curvature of a non flat complex space form as the ones which have constant totally real sectional ...
Pérez, Juan de Dios +2 more
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Note on the asymptotic structure of Kerr-Schild form
Journal of High Energy Physics, 2022 The Kerr-Schild form provides a natural way of realizing the classical double copy that relates exact solutions in general relativity to exact solutions in gauge theory. In this paper, we examine the asymptotic structure of Kerr-Schild form.
Pujian Mao, Weicheng Zhao
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Parallel submanifolds of complex space forms II [PDF]
Nagoya Mathematical Journal, 1983 This is a continuation of Part I, which appeared in this journal.In the previous paper I we have defined the following notions: orthogonal Jordan triple system (OJTS), orthogonal symmetric graded Lie algebra (OSGLA), orthogonal Jordan algebra (OJA), Hermitian symmetric graded Lie algebra (HSGLA).
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Symplectic maps of complex domains into complex space forms
Journal of Geometry and Physics, 2008 to appear in Journal of Geometry and ...
LOI, ANDREA, ZUDDAS, FABIO
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Do evolutionary algorithm dynamics create complex network structures? [PDF]
, 2021 This paper presents a novel method for visualizing the dynamics of evolutionary algorithms in the form of complex networks. We discuss the analogy between individuals in populations in an arbitrary evolutionary algorithm and vertices of a complex network,
Jašek, Roman +3 more
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Feynman’s iϵ prescription, almost real spacetimes, and acceptable complex spacetimes
Journal of High Energy Physics, 2022 Feynman’s iϵ prescription for quantum field theoretic propagators has a quite natural reinterpretation in terms of a slight complex deformation of the Minkowski space-time metric. Though originally a strictly flat-space result, once reinterpreted in this
Matt Visser
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