Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/96570
Type: Artigo de periódico
Title: Roton Interactions In Superfluid Helium
Author: Meyer W.
Wong K.W.
Marburger J.H.
Abstract: Based on a hard-sphere model for superfluid helium we derive a microscopic theory for quasiparticle interactions in this liquid. A satisfactory upper bound for the roton-roton collision frequency is obtained from this model. This theory also leads to an attractive coupling of two rotons with opposite momenta but the coupling strength is an order of magnitude larger than the phenomenological estimates based on experiments. However, as our analysis reveals, this large coupling strength is compatible with other physical considerations presented in this paper and does not contradict experimental data. © 1976 The American Physical Society.
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Rights: aberto
Identifier DOI: 10.1103/PhysRevB.14.1932
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-35949043181&partnerID=40&md5=d377045623fafdaf0189ac12c4d18b1e
Date Issue: 1976
Appears in Collections:Unicamp - Artigos e Outros Documentos

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