Coupling mechanisms for damped vortex motion in superfluids

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.8282· OSTI ID:632611

Cataldo, H M; Desposito, M A; Hernandez, E S; Jezek, D M ^[1]

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1. Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, RA-1428 Buenos Aires (Argentina)

We investigate different dissipative dynamics for a vortex line immersed into a superfluid where density fluctuations have been excited. For this sake, we consider various linear coupling models where the vortex interacts with the quasiparticles of the normal fluid through its coordinate or momentum. We can unambiguously show that one and only one combination of these variables leads to damped evolution in agreement with the phenomenological descriptions. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 632611
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 13 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DAMPING
DENSITY
FLUCTUATIONS
SUPERFLUIDITY
VORTEX FLOW
VORTICES