Mutual friction in helium II: A microscopic approach

We develop a microscopic model of mutual friction represented by the dissipative dynamics of a normal fluid flow which interacts with the helical normal modes of vortices comprising a lattice in thermal equilibrium. Such vortices are assumed to interact with the quasiparticles forming the normal flu...

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Detalhes bibliográficos
Autor: Cataldo, Horacio Maximo
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/60952
Acesso em linha:http://hdl.handle.net/11336/60952
Access Level:acceso abierto
Palavra-chave:Vortices
Superfluids
Helium II
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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spelling Mutual friction in helium II: A microscopic approachCataldo, Horacio MaximoVorticesSuperfluidsHelium IIhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We develop a microscopic model of mutual friction represented by the dissipative dynamics of a normal fluid flow which interacts with the helical normal modes of vortices comprising a lattice in thermal equilibrium. Such vortices are assumed to interact with the quasiparticles forming the normal fluid through a pseudomomentum-conserving scattering Hamiltonian. We study the approach to equilibrium of the normal fluid flow for temperatures below 1 K, deriving an equation of motion for the quasiparticle pseudomomentum which leads to the expected form predicted by the Hall-Vinen-Bekharevich-Khalatnikov equations. We obtain an expression for the mutual friction coefficient in terms of microscopic parameters, which turns out to be practically independent of the vortex mass for values arising from diverse theories. By comparing our expression of B with previous theoretical estimates, we deduce interesting qualitative features about the excitation of Kelvin modes by the quasiparticle scattering. © 2009 American Institute of Physics.Fil: Cataldo, Horacio Maximo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; ArgentinaAmerican Institute of Physics2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/60952Cataldo, Horacio Maximo; Mutual friction in helium II: A microscopic approach; American Institute of Physics; Low Temperature Physics; 35; 12; 12-2009; 909-9131063-777XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1063/1.3274809info:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.3274809info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:51:34Zoai:ri.conicet.gov.ar:11336/60952instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:51:34.569CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mutual friction in helium II: A microscopic approach
title Mutual friction in helium II: A microscopic approach
spellingShingle Mutual friction in helium II: A microscopic approach
Cataldo, Horacio Maximo
Vortices
Superfluids
Helium II
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
title_short Mutual friction in helium II: A microscopic approach
title_full Mutual friction in helium II: A microscopic approach
title_fullStr Mutual friction in helium II: A microscopic approach
title_full_unstemmed Mutual friction in helium II: A microscopic approach
title_sort Mutual friction in helium II: A microscopic approach
dc.creator.none.fl_str_mv Cataldo, Horacio Maximo
author Cataldo, Horacio Maximo
author_facet Cataldo, Horacio Maximo
author_role author
dc.subject.none.fl_str_mv Vortices
Superfluids
Helium II
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
topic Vortices
Superfluids
Helium II
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
description We develop a microscopic model of mutual friction represented by the dissipative dynamics of a normal fluid flow which interacts with the helical normal modes of vortices comprising a lattice in thermal equilibrium. Such vortices are assumed to interact with the quasiparticles forming the normal fluid through a pseudomomentum-conserving scattering Hamiltonian. We study the approach to equilibrium of the normal fluid flow for temperatures below 1 K, deriving an equation of motion for the quasiparticle pseudomomentum which leads to the expected form predicted by the Hall-Vinen-Bekharevich-Khalatnikov equations. We obtain an expression for the mutual friction coefficient in terms of microscopic parameters, which turns out to be practically independent of the vortex mass for values arising from diverse theories. By comparing our expression of B with previous theoretical estimates, we deduce interesting qualitative features about the excitation of Kelvin modes by the quasiparticle scattering. © 2009 American Institute of Physics.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/60952
Cataldo, Horacio Maximo; Mutual friction in helium II: A microscopic approach; American Institute of Physics; Low Temperature Physics; 35; 12; 12-2009; 909-913
1063-777X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/60952
identifier_str_mv Cataldo, Horacio Maximo; Mutual friction in helium II: A microscopic approach; American Institute of Physics; Low Temperature Physics; 35; 12; 12-2009; 909-913
1063-777X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1063/1.3274809
info:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.3274809
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15.812429

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