Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Chaotic vortex filaments in a Bose – Einstein condensate and in superfluid helium. / Nemirovskii, S. K.
в: Quantum Electronics, Том 48, № 5, 01.01.2018, стр. 405-409.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Chaotic vortex filaments in a Bose – Einstein condensate and in superfluid helium
AU - Nemirovskii, S. K.
N1 - Publisher Copyright: © 2018 Kvantovaya Elektronika and Turpion Ltd.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - A statement of the quantum turbulence problem in both a Bose – Einstein condensate (BEC) and superfluid helium is formulated. In superfluid helium use is made of a so-called vortex filament method, in which quantum vortices are represented by string-like objects, i.e. vortex lines. The dynamics of the vortex lines is determined by deterministic equations of motion, supplemented by random reconnections. Unlike He II, the laws of the dynamics of quantum vortices in BEC are based on the nonlinear Schrödinger equation. This makes it possible to obtain a microscopic description of the collision of vortices, the structure of a vortex filament, etc. A comparative analysis of these complementary approaches is carried out. It is shown that there are some features that do not automatically transfer the results obtained for BEC to vortices in He II and vice versa.
AB - A statement of the quantum turbulence problem in both a Bose – Einstein condensate (BEC) and superfluid helium is formulated. In superfluid helium use is made of a so-called vortex filament method, in which quantum vortices are represented by string-like objects, i.e. vortex lines. The dynamics of the vortex lines is determined by deterministic equations of motion, supplemented by random reconnections. Unlike He II, the laws of the dynamics of quantum vortices in BEC are based on the nonlinear Schrödinger equation. This makes it possible to obtain a microscopic description of the collision of vortices, the structure of a vortex filament, etc. A comparative analysis of these complementary approaches is carried out. It is shown that there are some features that do not automatically transfer the results obtained for BEC to vortices in He II and vice versa.
KW - Bose – Einstein condensate
KW - Quantum vortices
KW - Superfluid turbulence
KW - Topological defects
KW - topological defects
KW - Bose - Einstein condensate
KW - GAS
KW - ATOMS
KW - TURBULENCE
KW - GENERATION
KW - quantum vortices
KW - superfluid turbulence
UR - http://www.scopus.com/inward/record.url?scp=85048030835&partnerID=8YFLogxK
U2 - 10.1070/QEL16662
DO - 10.1070/QEL16662
M3 - Article
AN - SCOPUS:85048030835
VL - 48
SP - 405
EP - 409
JO - Quantum Electronics
JF - Quantum Electronics
SN - 1063-7818
IS - 5
ER -
ID: 13755546