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Superfluid 4He: just a very cold liquid?

We 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 approx. 1 K can be fully described by considering only density fluctuations. We also discuss how the res... Full description

Published: New York, Kluwer Academic/Plenum Publishers, 2000
Kongresse: International Symposium on Quantum Fluids and Solids 2000 2000.06.06-2000.06.11 Minneapolis, MN, US
QFS 2000 2000.06.06-2000.06.11 Minneapolis, MN, US
International Symposium on Quantum Fluids and Solids 2000.06.06-2000.06.11 Minneapolis, MN, US
QFS 2000 2000.06.06-2000.06.11 Minneapolis, MN, US
Contained in: Journal of Low Temperature Physics Vol. 121, No. 5-6 (2000), p. 293-302
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ISSN: 0022-2291
Additional Keywords: DYNAMISCHES-VERHALTEN
ELASTIZITAET
ENERGIEUEBERTRAGUNG
FLUESSIGHELIUM
GASDICHTE
KONDENSATION
NEUTRONENSTREUUNG
PHONON
STOERGROESSENAUFSCHALTUNG
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 10 Seiten, 24 Quellen
PPN (Catalogue-ID): WTI038053993
Note: WTI TEMA DB
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520 |a We 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 approx. 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. 
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