Superfluid ⁴He: just a very cold liquid?

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Journal titleJournal of Temperature Physics
AbstractWe present a unified description of the dynamic response of superfluid ⁴He using perturbation theory. We show that the characteristic features of the ⁴He inelastic neutron scattering spectra at T~1 K can be fully described by considering only density fluctuations. We also discuss how the response changes when the temperature is raised through the superfluid phase to the normal-fluid phase, and we argue that these changes principally reflect the behavior expected because of the Bose statistics obeyed by all the ⁴He atoms rather than being effects of the depletion of the Bose condensate.
Publication date
PublisherSpringer US
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedYes
NPARC number12327922
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Record identifierabf4ed94-d23c-4bf9-84db-df6b0d36ee70
Record created2009-09-10
Record modified2017-07-25
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