Titlebook: Excitations in Two-Dimensional and Three-Dimensional Quantum Fluids; A. F. G. Wyatt,H. J. Lauter Book 1991 Plenum Press, New York 1991 Cou

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Phase Transitions in Layered Film Systems,We consider the interaction of rotons with quantized vortex lines in the theory of mutual friction. A good account is given of mutual friction at low temperatures and under pressure. We also consider collisions of rotons with rotons in the context of a recent experiment by Forbes and Wyatt.

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978-1-4684-5939-5Plenum Press, New York 1991

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Containment Control of Swarm Systems,heoretical studies. The aim is to set the stage for the talks by Stirling, Griffin, Sokol, Svensson and Campbell. Recent experiments have focussed chiefly on the temperature dependence of the dynamic structure factor, .(.), and on scattering at high . to explore Final State (FS) interactions and to

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https://doi.org/10.1007/978-981-15-2240-6ive. High resolution neutron scattering studies. of the lineshape exhibited by . have given vivid evidence of the completely different behaviour of the low . phonon spectrum and the high . maxon-roton spectrum as the temperature increases towards ... Recently, Glyde and the author have realized that

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Assembly and Fragmentation of Tat Pores,tions between those excitations. It could reasonably be argued that the most significant features of the excitation spectrum of superfluid .He were known by about 1975, following the classic investigations of Cowley and Woods . at Chalk River, and of the Brookhaven group .. The phonon-maxon-roton di

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