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Zusatztext a fine addition to the literature. It belongs on the bookshelf of anyone seriously interested in understanding the theory of excitations in quantum fluids and solids. ... This is a fine book. I highly recommend it to those who are entering the field, those who want a tutorial on the subjects covered and those who want a guide to the relevant literature. Klappentext Liquid 4He and 3He are the purest Bose and Fermi liquids currently found in nature. Understanding their dynamics is fundamental to understanding more complex matter. This book provides an introduction to the subject and develops the theory of zero sound, phonons, rotons, spin and single particle excitations in quantum solids and fluids. Similarities between quantum solids and fluids are drawn wherever possible. Topics include dynamic response functions, neutron studies of solid helium, the nature of excitations in 3He, approximations to the dynamic susceptibility, and intermediate and high momentum transfer, among many others. In offering a critical comparison between theory and up-to-the-minute experimental data, the book provides a comprehensive assessment of our current understanding of collective and single particle excitations in quantum liquids and solids. Zusammenfassung Liquid 4He and 3He are the purest Brose and Fermi liquids currently available in nature. Understanding the dynamics and excitations of those quantum systems is a fundamental issue of science and a guide for more complex matter. The book develops the theory of zero sound, phonons, rotons, spin and single particle excitations in quantum solids and fluids in an historical context. The book brings the theory up to date in modern language with similarities between quantum solids and fluids drawn wherever possible. A survey of recent neutron scattering data in each system is presented. A critical comparison of theory and recent data provides a comprehensive assessment of our current understanding of collective and single particle excitations in quantum liquids and solids. Inhaltsverzeichnis Introduction 1: Dynamic response functions 2: Physics of solid helium 3: Dynamic structure factor of solid helium 4: Self consistent phonon theory 5: Neutron studies of solid helium 6: Introduction to liquid 4He 7: Microscopic picture 8: Historical development of ideas 9: Observed properties of liquid 4He 10: Theory of liquid 4He 11: Nature of excitations in liquid 4He 12: Excitations in liquid 3He 13: Dynamic susceptibility of liquid 3He 14: Approximations to the dynamic susceptibility 15: Models of S(Q,omega) in liquid 3He 16: Mori and kinetic theories of liquid 3He 17: The impulse approximation 18: Final state contributions 19: Intermediate and high momentum transfer 20: Recent monographs and conference proceedings References Appendices A-C ...
