Artículo
Cataldo, H.M. "Mutual friction in helium II: A microscopic approach" (2009) Fizika Nizkikh Temperatur (Kharkov). 35(12):1171-1176
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Abstract:
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 H.M. Cataldo.
Registro:
| Documento: | Artículo |
| Título: | Mutual friction in helium II: A microscopic approach |
| Autor: | Cataldo, H.M. |
| Filiación: | Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Consejo Nacional de Investigaciones Cientificas y Tecnicas, RA-1428 Buenos Aires, Argentina |
| Palabras clave: | Mutual friction; Normal fluid flow; Vortex oscillations; Approach to equilibrium; Dissipative dynamics; Equation of motion; Helium II; Kelvin modes; Microscopic models; Microscopic parameter; Mutual friction; Normal fluids; Normal modes; Qualitative features; Quasi particles; Thermal equilibriums; Equations of motion; Fluids; Helium; Phase equilibria; Tribology; Vortex flow; Friction |
| Año: | 2009 |
| Volumen: | 35 |
| Número: | 12 |
| Página de inicio: | 1171 |
| Página de fin: | 1176 |
| Título revista: | Fizika Nizkikh Temperatur (Kharkov) |
| Título revista abreviado: | Fiz Nizk Temp |
| ISSN: | 01326414 |
| CODEN: | FNTED |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01326414_v35_n12_p1171_Cataldo |
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Citas:
---------- APA ----------
(2009) . Mutual friction in helium II: A microscopic approach. Fizika Nizkikh Temperatur (Kharkov), 35(12), 1171-1176.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01326414_v35_n12_p1171_Cataldo [ ]
---------- CHICAGO ----------
Cataldo, H.M. "Mutual friction in helium II: A microscopic approach" . Fizika Nizkikh Temperatur (Kharkov) 35, no. 12 (2009) : 1171-1176.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01326414_v35_n12_p1171_Cataldo [ ]
---------- MLA ----------
Cataldo, H.M. "Mutual friction in helium II: A microscopic approach" . Fizika Nizkikh Temperatur (Kharkov), vol. 35, no. 12, 2009, pp. 1171-1176.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01326414_v35_n12_p1171_Cataldo [ ]
---------- VANCOUVER ----------
Cataldo, H.M. Mutual friction in helium II: A microscopic approach. Fiz Nizk Temp. 2009;35(12):1171-1176.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01326414_v35_n12_p1171_Cataldo [ ]
