Excitations in a Bose-Condensed Liquid
Book Details
Format
Hardback or Cased Book
Book Series
Cambridge Studies in Low Temperature Physics
ISBN-10
0521432715
ISBN-13
9780521432719
Publisher
Cambridge University Press
Imprint
Cambridge University Press
Country of Manufacture
GB
Country of Publication
GB
Publication Date
Aug 19th, 1993
Print length
324 Pages
Weight
620 grams
Dimensions
15.90 x 23.60 x 2.80 cms
Ksh 24,650.00
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An up-to-date account of the microscopic theory of the dynamics of superfluid 4He, with a focus on the pivotal role of the Bose condensate. The book gives a systematic account of excitations in both the hydrodynamic and collisionless frequency regions.
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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