Abstract:
We present evidence of Kelvin excitations in space-time resolved spectra of numerical simulations of quantum turbulence. Kelvin waves are transverse and circularly polarized waves that propagate along quantized vortices, for which the restitutive force is the tension of the vortex line, and which play an important role in theories of superfluid turbulence. We use the Gross-Pitaevskii equation to model quantum flows, letting an initial array of well-organized vortices develop into a turbulent bundle of intertwined vortex filaments. By achieving high spatial and temporal resolution we are able to calculate space-time resolved mass density and kinetic energy spectra. Evidence of Kelvin and sound waves is clear in both spectra. Identification of the waves allows us to extract the spatial spectrum of Kelvin waves, clarifying their role in the transfer of energy. © 2015 American Physical Society.
Registro:
Documento: |
Artículo
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Título: | Spatiotemporal detection of Kelvin waves in quantum turbulence simulations |
Autor: | Clark Di Leoni, P.; Mininni, P.D.; Brachet, M.E. |
Filiación: | Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and IFIBA, CONICET, Ciudad Universitaria, Buenos Aires, 1428, Argentina Laboratoire de Physique Statistique de l'Ecole Normale Supérieure Associé Au CNRS, Universités Paris 6 et 7, 24 Rue Lhomond, Paris Cedex 05, 75237, France
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Palabras clave: | Bose-Einstein condensation; Energy transfer; Gravity waves; Kinetic energy; Kinetics; Quantum theory; Turbulence; Circularly polarized waves; Gross-Pitaevskii equation; Kinetic energy spectra; Quantized vortex; Quantum turbulence; Quantum turbulence simulations; Spatial and temporal resolutions; Superfluid turbulence; Vortex flow |
Año: | 2015
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Volumen: | 92
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Número: | 6
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DOI: |
http://dx.doi.org/10.1103/PhysRevA.92.063632 |
Título revista: | Physical Review A
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Título revista abreviado: | Phys. Rev. A
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ISSN: | 24699926
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v92_n6_p_ClarkDiLeoni |
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Citas:
---------- APA ----------
Clark Di Leoni, P., Mininni, P.D. & Brachet, M.E.
(2015)
. Spatiotemporal detection of Kelvin waves in quantum turbulence simulations. Physical Review A, 92(6).
http://dx.doi.org/10.1103/PhysRevA.92.063632---------- CHICAGO ----------
Clark Di Leoni, P., Mininni, P.D., Brachet, M.E.
"Spatiotemporal detection of Kelvin waves in quantum turbulence simulations"
. Physical Review A 92, no. 6
(2015).
http://dx.doi.org/10.1103/PhysRevA.92.063632---------- MLA ----------
Clark Di Leoni, P., Mininni, P.D., Brachet, M.E.
"Spatiotemporal detection of Kelvin waves in quantum turbulence simulations"
. Physical Review A, vol. 92, no. 6, 2015.
http://dx.doi.org/10.1103/PhysRevA.92.063632---------- VANCOUVER ----------
Clark Di Leoni, P., Mininni, P.D., Brachet, M.E. Spatiotemporal detection of Kelvin waves in quantum turbulence simulations. Phys. Rev. A. 2015;92(6).
http://dx.doi.org/10.1103/PhysRevA.92.063632