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Excitations in a Bose-condensed Liquid: Cambridge Studies in Low Temperature Physics, cartea 4

Autor Allan Griffin
en Limba Engleză Paperback – 14 dec 2005
This volume gives an up-to-date, systematic account of the microscopic theory of Bose-condensed fluids developed since the late 1950s. In contrast to the usual phenomenological discussions of superfluid 4He, the present treatment is built on the pivotal role of the Bose broken symmetry and a Bose condensate. The many-body formalism is developed, with emphasis on the one- and two-particle Green's functions and their relation to the density response function. These are all coupled together by the Bose broken symmetry, which provides the basis for understanding the elementary excitations and response functions in the hydrodynamic and collisionless regions. It also explains the difference between excitations in the superfluid and normal phases. Chapter 4 gives the first critical assessment of the experimental evidence for a Bose condensate in liquid 4He, based on high-momentum neutron scattering data.
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Specificații

ISBN-13: 9780521019989
ISBN-10: 0521019982
Pagini: 324
Ilustrații: 102 b/w illus.
Dimensiuni: 153 x 229 x 19 mm
Greutate: 0.48 kg
Ediția:Revised
Editura: Cambridge University Press
Colecția Cambridge University Press
Seria Cambridge Studies in Low Temperature Physics

Locul publicării:Cambridge, United Kingdom

Cuprins

Preface; 1. Excitations in superfluid 4He: an introduction; 2. Dynamic response of helium atoms to thermal neutrons; 3. Bose broken symmetry and its implications; 4. High momentum scattering and the condensate fraction; 5. Dielectric formalism for a Bose fluid; 6. Response functions in the low frequency, long wavelength limit; 7. Phonons, maxons and rotons; 8. Sum rule analysis of the different contributions to dynamic structure analysis; 9. Variational and parameterized approaches; 10. Two-particle spectrum in Bose-condensed fluids; 11. Relation between excitations in liquid and solid helium; 12. The new picture: some unsolved problems.

Recenzii

'This book was a godsend to me! … a subject to which the author has made very substantial contributions … I strongly recommend this book and am very glad to have this book in my library. I am sure that it will be very greatly valued by beginners in the field.' Contemporary Physics

Descriere

An up-to-date account of the microscopic theory of the dynamics of superfluid 4He.

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