Chaotic vortex filaments in a Bose – Einstein condensate and in superfluid helium

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Chaotic vortex filaments in a Bose – Einstein condensate and in superfluid helium. / Nemirovskii, S. K.

In: Quantum Electronics, Vol. 48, No. 5, 01.01.2018, p. 405-409.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{a114756ffcc2471ba08016ead70294cc,

title = "Chaotic vortex filaments in a Bose – Einstein condensate and in superfluid helium",

abstract = "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 Schr{\"o}dinger 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.",

keywords = "Bose – Einstein condensate, Quantum vortices, Superfluid turbulence, Topological defects, topological defects, Bose - Einstein condensate, GAS, ATOMS, TURBULENCE, GENERATION, quantum vortices, superfluid turbulence",

author = "Nemirovskii, {S. K.}",

note = "Publisher Copyright: {\textcopyright} 2018 Kvantovaya Elektronika and Turpion Ltd.",

year = "2018",

month = jan,

day = "1",

doi = "10.1070/QEL16662",

language = "English",

volume = "48",

pages = "405--409",

journal = "Quantum Electronics",

issn = "1063-7818",

publisher = "Turpion Ltd.",

number = "5",

}

RIS

TY - JOUR

T1 - Chaotic vortex filaments in a Bose – Einstein condensate and in superfluid helium

AU - Nemirovskii, S. K.

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