Results 1 to 10 of about 13,507 (164)
Discrete time model of self-oscillations with spectral line widening
Физика волновых процессов и радиотехнические системы, 2022 An algorithm for generating quasi-harmonic self-oscillations with a uniformly widened spectral line is presented. The algorithm is based on the equation of motion of the Thomson-type DT-oscillator, which introduced a random effect in the form of band ...
Valery V. Zaitsev +2 more
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Quantum oscillations in interaction-driven insulators
SciPost Physics, 2022 In recent years it has become understood that quantum oscillations of the magnetization as a function of magnetic field, long recognized as phenomena intrinsic to metals, can also manifest in insulating systems.
Andrew A. Allocca, Nigel R. Cooper
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Nonlinear Dynamics of a Nonlinear Damping Gyroscope and Its Passive Control
Journal of Control Science and Engineering, 2023 This article deals with the analysis of the effects of passive control on the complex dynamics of a nonlinear damping gyroscope. After modeling the gyroscope dynamics under the influence of the control force, using the harmonic balance method, the ...
Semedeton Olivier Hounnan +2 more
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Earth, Planets and Space, 2022 Continuous Plinian eruptions of volcanoes often excite atmospheric resonant oscillations with several distinct periods of a few minutes. We detected such harmonic oscillations by the 2021 August eruption of the Fukutoku-Okanoba volcano, a submarine ...
Kosuke Heki, Tatsuya Fujimoto
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Machines, 2022 The relevance of the problem is justified and the review of existing methods for determining the overhead line sag by the period of the conductor owned oscillations is conducted.
Danil Yaroslavsky +4 more
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Spiked harmonic oscillators [PDF]
Journal of Mathematical Physics, 2002 A complete variational treatment is provided for a family of spiked-harmonic oscillator Hamiltonians H=−d2/dx2+Bx2+λ/xα(B>0,λ>0), for arbitrary α>0. A compact topological proof is presented that the set S={ψn} of known exact solutions for α=2 constitutes an orthonormal basis of the Hilbert space L2(0,∞). Closed-form expressions are
Hall, Richard L. +2 more
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The Harmonic Oscillator on the Heisenberg Group [PDF]
Comptes Rendus. Mathématique, 2020 In this note we present a notion of harmonic oscillator on the Heisenberg group H n which forms the natural analogue of the harmonic oscillator on
Rottensteiner, David, Ruzhansky, Michael
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Relativistic harmonic oscillator [PDF]
Journal of Mathematical Physics, 2005 We study the semirelativistic Hamiltonian operator composed of the relativistic kinetic energy and a static harmonic-oscillator potential in three spatial dimensions and construct, for bound states with vanishing orbital angular momentum, its eigenfunctions in “compact form,” i.e., as power series, with expansion coefficients determined by an ...
Li, Zhi Feng +4 more
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On the Inverse to the Harmonic Oscillator [PDF]
Communications in Partial Differential Equations, 2015 Let $b_d$ be the Weyl symbol of the inverse to the harmonic oscillator on $\R^d$. We prove that $b_d$ and its derivatives satisfy convenient bounds of Gevrey and Gelfand-Shilov type, and obtain explicit expressions for $b_d$. In the even-dimensional case we characterize $b_d$ in terms of elementary functions. In the analysis we use properties of radial
Cappiello, Marco +2 more
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The use of frequency converters on three-circuit ferroresonant circuits [PDF]
E3S Web of Conferences, 2021 In this paper, the processes of formation of low-frequency currents in the circuits of ferromagnetic oscillations are analyzed, and the theory of the formation of secondary amplitude frequencies of soft excitation of parallel and series-connected ...
Shaymatov Bobokul +3 more
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