Global ETD Search
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Showing 1 to 8 of 8 for “"momentum-diffusion"”.
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Chaos and Momentum Diffusion of the Classical and Quantum Kicked Rotor
… We examine the structure of these regions. Momentum diffusion of the quantum kicked rotor is studied with both BB and standard quantum mechanics (SQM). A general analytical expression is given for the momentum diffusion at quantum resonance of both BB and SQM. We obtain agreement between the …
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Determination of Optimal Stable Channel Profiles
… of this channel geometry and the phenomenon of momentum-diffusion, that allows the present model to simulate the "stable bank, mobile bed" condition observed in rivers. The coupled equations of momentum-diffusion and force-balance are solved over the bank region to determine the shape of the …
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Topics in Energy Release and Particle Acceleration in the Heliosphere
… the focused acceleration mechanism. In addition, momentum diffusion provides a significant effect that cannot be neglected. The theory is extended to include focused deceleration and pure momentum diffusion.
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Robustness and infrared sensitivity of various observables in the application of AdS/CFT to heavy ion physics
… and the drag and transverse and longitudinal momentum diffusion coefficients for a heavy quark pulled through the plasma.) We do so using a toy model in which nonconformality is introduced via a one-parameter deformation of the AdS black hole dual to the hot KN = 4 SYM plasma. For values of …
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Dynamics of nonlinear cross-equatorial flow in the deep ocean
… mass sink. Dissipation is included as momentum diffusion. The Reynolds number, defined as the ratio of the mass source per unit depth to the viscosity, determines the nature of the flow, and a critical value, Rec, divides its possible behavior into two regimes. For Re < Rec, the flow is …
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Holography and strongly correlated systems
… their use in the simple examples of charge and momentum diffusion. Next, we turn to the study of strongly coupled theories with a finite density of a U(1) charge. The near-horizon geometry of the gravity dual of such a state has an AdS 2 factor, indicating the existence of a nontrivial emergent …
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Simulating organization of convective cloud fields and interactions with the surface
… studies, where we find model grid-spacing and momentum diffusion, governing the dynamics, to have an important influence on the overall evolution of deep convection. Fine grid-spacing is necessary, as the median width of updraught cores mostly does not exceed 1000 m. We associate this influence …