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Dissipative Vortex Motion in Fermi Superfluids at Ultra Low Temperatures
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
2013 (English)In: Journal of Low Temperature Physics, ISSN 0022-2291, E-ISSN 1573-7357, Vol. 171, no 5-6, 539-550 p.Article in journal (Refereed) Published
Abstract [en]

We discuss in detail the recently proposed mechanism of dissipation and damping of the vortex motion in Fermi superfluids at temperatures much smaller than the critical one (Silaev, Phys. Rev. Lett., 108:045303, 2012). In the absence of the heat bath of normal component the kinetic energy of the superflow is transferred to the vortex core fermions due to the accelerated vortex motion. The resulting local heating of the vortex cores creates the heat flux carried by non-equilibrium quasiparticles emitted by moving vortices. Here we study this peculiar kinetics of localized quasiparticles beyond relaxation time approximation, calculate the decrement of Kelvin waves and the total power losses in Kelvin wave cascade realized by the turbulent motion of He-3-B.

Place, publisher, year, edition, pages
2013. Vol. 171, no 5-6, 539-550 p.
Keyword [en]
Fermi superfluids, Quantum turbulence
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-123100DOI: 10.1007/s10909-012-0813-2ISI: 000318175500010Scopus ID: 2-s2.0-84878014523OAI: oai:DiVA.org:kth-123100DiVA: diva2:624663
Note

QC 20130603

Available from: 2013-06-03 Created: 2013-06-03 Last updated: 2017-12-06Bibliographically approved

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