# Resonant magnetohydrodynamic waves in high-beta plasmas

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The time evolution of a rotational discontinuity, characterized by a change of the magnetic-field direction by an angle Î”Î¸ such that Ï€<|Î”Î¸|<2Ï€ and no amplitude variation, is considered in the framework of asymptotic models that, through reductive perturbative expansions,...

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A generalized Kinetic Derivative Nonlinear SchrÃ¶dinger equation for the multidimensional dynamics of AlfvÃ©n wave trains is derived from the Vlasov-Maxwell equations. It includes the coupling to the mean effect of the longitudinal fields averaged along the direction of propagation, that...

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Presents an analytical solution of finite-amplitude solitary kinetic Alfven waves. Basic equations and dispersion relation; Comparison of the solution with the solution of the Korteweg-de Vries equation in the small amplitude limit; Relations between the width and amplitude of the waves.

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Studies the dynamics and dissipation of compressional Alfven waves near magnetic nulls. Damping of the wave modes; Validity for two-dimensional nulls; Efficiency of field nulls as convertors of compressional Alfven wave energy to thermal energy.

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We present experimental results on a microwave scheme for reading out a Josephson phase qubit. A capacitively shunted superconducting quantum interference device (SQUID) is used as a nonlinear resonator which is inductively coupled to the qubit. The flux state of the qubit is detected by...

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The triple-degenerate derivative nonlinear SchrÃ¶dinger (TDNLS) system modified with resistive wave damping and growth is truncated to study the coherent coupling of four waves, three Alfven and one acoustic, near resonance. In the conservative case, the truncation equations derive from a time...

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Presents a comparative study of two commonly used direct current to alternating current inverter control schemes through computer simulations PSpice. Single pulse tri-state pulse width modulation control scheme; Sinusoidal pulse width modulation; Performance of each inverter scheme.