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A theory of generalized Bloch oscillations
Journal of Physics: Condensed Matter, 2016Bloch oscillations of electrons are shown to occur for cases when the energy spectrum does not consist of the traditional evenly-spaced ladders and the potential gradient does not result from an external electric field. A theory of such generalized Bloch oscillations is presented and an exact calculation is given to confirm this phenomenon. Our results
Duggen, Lars +3 more
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1999
Preliminary representations and analyses of motion family behaviour on behaviour of trajectories in the neighbourhood of a periodic orbit natural and forced oscillations in systems with many degrees of freedom oscillations in nonlinear and controlled systems. Appendix: theory of rated stability.
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Preliminary representations and analyses of motion family behaviour on behaviour of trajectories in the neighbourhood of a periodic orbit natural and forced oscillations in systems with many degrees of freedom oscillations in nonlinear and controlled systems. Appendix: theory of rated stability.
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Prominence Oscillations: Theory
2003An extense observational background about the existence of oscillations in quiescent solar prominences has been gathered during the last twenty years. From these observations, information about different oscillatory parameters such as period, wavelength, phase speed, damping time, etc. has been obtained.
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1978
In undertaking the design of a crystal oscillator, an understanding of basic oscillator principles is not only desirable but essential. Therefore, a brief explanation of the operation of a crystal oscillator is given here. Basically, a crystal oscillator can be thought of as a closed loop system composed of an amplifier and a feedback network ...
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In undertaking the design of a crystal oscillator, an understanding of basic oscillator principles is not only desirable but essential. Therefore, a brief explanation of the operation of a crystal oscillator is given here. Basically, a crystal oscillator can be thought of as a closed loop system composed of an amplifier and a feedback network ...
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Theory of the Relativistic Oscillator
American Journal of Physics, 1957This is a study of the motions of a particle subject to the restoring force exerted by a linear spring, under the assumption that the mass depends upon the speed according to the formula given by the theory of special relativity.
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The Sturmian Theory of Oscillations
The Mathematical Gazette, 1954The Sturmian theory is concerned with the number of zeros that a solution of a linear differential equation of the second order may have in a given interval of the independent variable. As usually presented ( e.g.
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2017
Canonical quantization of QED in finite systems is performed in terms of new b-photon, f-electron, and f c -positron, which are called alpha-oscillators. The alpha-oscillator algebra is useful for non-perturbationally space-time resolved simulation solving the dual Cauchy problems of the time-dependent QED Hamiltonian \( {\widehat{H}}_{\mathrm{QED}}(t)
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Canonical quantization of QED in finite systems is performed in terms of new b-photon, f-electron, and f c -positron, which are called alpha-oscillators. The alpha-oscillator algebra is useful for non-perturbationally space-time resolved simulation solving the dual Cauchy problems of the time-dependent QED Hamiltonian \( {\widehat{H}}_{\mathrm{QED}}(t)
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Journal of Applied Physics, 1967
The efficiency, negative resistance, and conditions for space-charge control relevant to operation of a bulk semiconductor diode in the limited space-charge accumulation (LSA) mode of oscillation are discussed. Numerical results for n-GaAs indicate a maximum dc to rf-conversion efficiency of 18.5% for sine-wave excitation. The usable range of doping to
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The efficiency, negative resistance, and conditions for space-charge control relevant to operation of a bulk semiconductor diode in the limited space-charge accumulation (LSA) mode of oscillation are discussed. Numerical results for n-GaAs indicate a maximum dc to rf-conversion efficiency of 18.5% for sine-wave excitation. The usable range of doping to
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Free-oscillation coupling theory
1988The free oscillations of an elastic, spherical earth model can be combined using variational or Galerkin techniques to form hybrid oscillations that represent the free oscillations of a rotating, anelastic and laterally-variable earth model. With supercomputers and/or array processors, it is feasible to synthesize realistic long-period seismograms from
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