Quantum Liquids

J. Ruvalds

2012년 12월 · Elsevier

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Quantum Liquids contains lectures presented at the International School of Low Temperature Physics in Erice, Italy, on June 11-25, 1977. The book reviews developments in the study of superfluid phases of the 3He system and in the understanding of quasiparticles and their interactions in the Bose 4He system, along with recent work on the 3He-4He mixtures. Comprised of 10 chapters, this volume begins with an overview of the renormalization group theory, critical phenomena, and phase transition in superfluid helium. It then discusses the superfluid density and the nature of critical singularities, the theory and practice of neutron scattering, and scattering from weakly interacting quantum liquids. The reader is also introduced to the superfluidity of liquid helium films, light scattering from superfluid helium, and the theory of superfluid 3He. Other chapters focus on superfluid flow in helium-4 compared to that in helium-3, the physical properties of small droplets of helium as analogs of heavy nuclei, and experimental properties of superfluid 3He. Excitations in 3He-4He mixtures, bound excitations in liquid He4, and temperature dependence of the single roton energy and lifetime are also discussed. Physicists and students of physics will find this book extremely useful.