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dc.contributor.author
Beauvois, K.
dc.contributor.author
Campbell, C. E.
dc.contributor.author
Dawidowski, Javier
dc.contributor.author
Fåk, B.
dc.contributor.author
Godfrin, H.
dc.contributor.author
Krotscheck, E.
dc.contributor.author
Lauter, H. J.
dc.contributor.author
Lichtenegger, T.
dc.contributor.author
Ollivier, J.
dc.contributor.author
Sultan, A.
dc.date.available
2021-02-17T16:14:51Z
dc.date.issued
2016-07
dc.identifier.citation
Beauvois, K.; Campbell, C. E.; Dawidowski, Javier; Fåk, B.; Godfrin, H.; et al.; Superfluid He 4 dynamics beyond quasiparticle excitations; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 94; 2; 7-2016; 1-5
dc.identifier.issn
1098-0121
dc.identifier.uri
http://hdl.handle.net/11336/125809
dc.description.abstract
The dynamics of superfluid 4He at and above the Landau quasiparticle regime is investigated by high precision inelastic neutron scattering measurements of the dynamic structure factor. A highly structured response is observed above the familiar phonon-maxon-roton spectrum, characterized by sharp thresholds for phonon-phonon, maxon-roton and roton-roton coupling processes. The experimental dynamic structure factor is compared to the calculation of the same physical quantity by a Dynamic Many-body theory including three-phonon processes self-consistently. The theory is found to provide a quantitative description of the dynamics of the correlated bosons for energies up to about three times that of the Landau quasiparticles.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Helio superfluido
dc.subject
Scattering de neutrones
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Rotones
dc.subject.classification
Física Atómica, Molecular y Química
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Superfluid He 4 dynamics beyond quasiparticle excitations
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-02-09T18:52:01Z
dc.identifier.eissn
2469-9969
dc.journal.volume
94
dc.journal.number
2
dc.journal.pagination
1-5
dc.journal.pais
Estados Unidos
dc.journal.ciudad
New York
dc.description.fil
Fil: Beauvois, K.. Centre National de la Recherche Scientifique; Francia. Institut Laue Langevin; Francia. Universite Grenoble Alpes; Francia
dc.description.fil
Fil: Campbell, C. E.. University of Minnesota; Estados Unidos
dc.description.fil
Fil: Dawidowski, Javier. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
dc.description.fil
Fil: Fåk, B.. Universite Grenoble Alpes; Francia. Institut Laue Langevin; Francia
dc.description.fil
Fil: Godfrin, H.. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
dc.description.fil
Fil: Krotscheck, E.. Department Of Physics, University At Buffalo, Suny Buff; Estados Unidos. Johannes Kepler University; Austria
dc.description.fil
Fil: Lauter, H. J.. Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee; Estados Unidos
dc.description.fil
Fil: Lichtenegger, T.. Department Of Physics, University At Buffalo, Suny Buff; Estados Unidos. Johannes Kepler University; Austria
dc.description.fil
Fil: Ollivier, J.. Institut Laue Langevin; Francia
dc.description.fil
Fil: Sultan, A.. Centre National de la Recherche Scientifique; Francia. Institut Laue Langevin; Francia
dc.journal.title
Physical Review B: Condensed Matter and Materials Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevB.94.024504
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.024504
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1605.02638
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