Structure and stability of superfluid 4He systems with cylindrical symmetry

The structure and stability of superfluid 4He systems with cylindrical symmetry are studied. Ground-state energies and density profiles are computed by using density-functional approaches. A model to understand the energetics of cylindrical systems is developed by following the main ideas of the Dro...

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Detalles Bibliográficos
Autores principales: Szybisz, L., Gatica, S.M.
Formato: JOUR
Materias:
helium
article
chemical structure
compression
density
energy
mathematical model
molecular stability
temperature dependence
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01631829_v64_n22_p2245231_Szybisz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01631829_v64_n22_p2245231_Szybisz
record_format dspace
spelling todo:paper_01631829_v64_n22_p2245231_Szybisz2023-10-03T15:01:52Z Structure and stability of superfluid 4He systems with cylindrical symmetry Szybisz, L. Gatica, S.M. helium article chemical structure compression density energy mathematical model molecular stability temperature dependence The structure and stability of superfluid 4He systems with cylindrical symmetry are studied. Ground-state energies and density profiles are computed by using density-functional approaches. A model to understand the energetics of cylindrical systems is developed by following the main ideas of the Droplet Model utilized to describe spherical clusters. The necessary condition for stability is formulated by imposing a positive longitudinal isothermal compressibility along the principal axis of the cylinder. It is shown that free cylinders of 4He at T = 0 K are unstable. As an example of the evolution towards stable systems, results for liquid 4He confined by cylindrical nanopores in Cs are reported. Fil:Szybisz, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gatica, S.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01631829_v64_n22_p2245231_Szybisz
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic helium
article
chemical structure
compression
density
energy
mathematical model
molecular stability
temperature dependence
spellingShingle helium
article
chemical structure
compression
density
energy
mathematical model
molecular stability
temperature dependence
Szybisz, L.
Gatica, S.M.
Structure and stability of superfluid 4He systems with cylindrical symmetry
topic_facet helium
article
chemical structure
compression
density
energy
mathematical model
molecular stability
temperature dependence
description The structure and stability of superfluid 4He systems with cylindrical symmetry are studied. Ground-state energies and density profiles are computed by using density-functional approaches. A model to understand the energetics of cylindrical systems is developed by following the main ideas of the Droplet Model utilized to describe spherical clusters. The necessary condition for stability is formulated by imposing a positive longitudinal isothermal compressibility along the principal axis of the cylinder. It is shown that free cylinders of 4He at T = 0 K are unstable. As an example of the evolution towards stable systems, results for liquid 4He confined by cylindrical nanopores in Cs are reported.
format JOUR
author Szybisz, L.
Gatica, S.M.
author_facet Szybisz, L.
Gatica, S.M.
author_sort Szybisz, L.
title Structure and stability of superfluid 4He systems with cylindrical symmetry
title_short Structure and stability of superfluid 4He systems with cylindrical symmetry
title_full Structure and stability of superfluid 4He systems with cylindrical symmetry
title_fullStr Structure and stability of superfluid 4He systems with cylindrical symmetry
title_full_unstemmed Structure and stability of superfluid 4He systems with cylindrical symmetry
title_sort structure and stability of superfluid 4he systems with cylindrical symmetry
url http://hdl.handle.net/20.500.12110/paper_01631829_v64_n22_p2245231_Szybisz
work_keys_str_mv AT szybiszl structureandstabilityofsuperfluid4hesystemswithcylindricalsymmetry
AT gaticasm structureandstabilityofsuperfluid4hesystemswithcylindricalsymmetry
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