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Velocity of sound in a dense, hard-sphere Bose liquid

Velocity of sound in a dense, hard-sphere Bose liquid The collective approach is used to calculate the velocity of sound in a dense system of bosons interacting via a two-body hard-sphere potential. The calculation is carried out with a hard-sphere potential that is equivalent to the real potential between 4He atoms over the density range of liquid 4He. The agreement between the calculated and experimental results is good over the entire range. The idea behind the calculation is that the space spanned by the collective variables is larger than the physical space and when the interaction is strong, it becomes very important to reduce the effect of nonphysical states in the calculation of physical quantities, by imposing certain physical constraints. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

Velocity of sound in a dense, hard-sphere Bose liquid

Journal of Low Temperature Physics , Volume 35 (4) – May 14, 2004

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References (15)

Publisher
Springer Journals
Copyright
Copyright
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1007/BF00115588
Publisher site
See Article on Publisher Site

Abstract

The collective approach is used to calculate the velocity of sound in a dense system of bosons interacting via a two-body hard-sphere potential. The calculation is carried out with a hard-sphere potential that is equivalent to the real potential between 4He atoms over the density range of liquid 4He. The agreement between the calculated and experimental results is good over the entire range. The idea behind the calculation is that the space spanned by the collective variables is larger than the physical space and when the interaction is strong, it becomes very important to reduce the effect of nonphysical states in the calculation of physical quantities, by imposing certain physical constraints.

Journal

Journal of Low Temperature PhysicsSpringer Journals

Published: May 14, 2004

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