Superfluidity of Bose-Einstein condensates in toroidal traps with nonlinear lattices
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F11%3A00374465" target="_blank" >RIV/67985882:_____/11:00374465 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevA.84.063638" target="_blank" >http://dx.doi.org/10.1103/PhysRevA.84.063638</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.84.063638" target="_blank" >10.1103/PhysRevA.84.063638</a>
Alternative languages
Result language
angličtina
Original language name
Superfluidity of Bose-Einstein condensates in toroidal traps with nonlinear lattices
Original language description
Superfluid properties of Bose-Einstein condensates (BEC) in toroidal quasi one dimensional traps are investigated in the presence of periodic scattering length modulations along the ring. The existence of several types of stable periodic waves, ranging from almost uniform to very fragmented chains of weakly interacting and equally spaced solitons, is demonstrated. We show that these waves may support persistent atomic currents and sound waves with spectra of Bogoliubov type. Fragmented condensates can be viewed as arrays of Josephson junctions and the current as a BEC manifestation of the dc-Josephson effect. The influence of linear defects on BEC superfluidity has been also investigated. We found that under critical velocities, linear defects that arestatic with respect to the lattice (while the condensate moves in respect to both the optical lattice and the defect) preserve the BEC superfluidity.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/OC09060" target="_blank" >OC09060: Theory and modelling of non-reciprocal sub-wavelength struktures and plasmonic waveguide systems.</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review. A
ISSN
1050-2947
e-ISSN
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Volume of the periodical
84
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
0636381-0636389
UT code for WoS article
000298564400011
EID of the result in the Scopus database
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