dc.identifier.uri |
http://dx.doi.org/10.15488/1209 |
|
dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/1233 |
|
dc.contributor.author |
Mishra, Tapan
|
|
dc.contributor.author |
Greschner, Sebastian
|
|
dc.contributor.author |
Santos, Luis
|
|
dc.date.accessioned |
2017-03-17T10:51:57Z |
|
dc.date.available |
2017-03-17T10:51:57Z |
|
dc.date.issued |
2016 |
|
dc.identifier.citation |
Mishra, T.; Greschner, S.; Santos, L.: Density-induced geometric frustration of ultra-cold bosons in optical lattices. In: New Journal of Physics 18 (2016), Nr. 4, 45016. DOI: https://doi.org/10.1088/1367-2630/18/4/045016 |
|
dc.description.abstract |
A density-dependent gauge field may induce density-induced geometric frustration, leading to a non-trivial interplay between density modulation and frustration, which we illustrate for the particular case of ultra-cold bosons in zig-zag optical lattices with a density-dependent hopping amplitude. We show that the density-induced frustration leads to a rich landscape of quantum phases, including Mott insulator, bond-order insulator, two-component superfluids, chiral superfluids, and partially paired superfluids. We show as well that the density-dependent hopping results in an effective repulsive or attractive interaction, and that for the latter case the vacuum may be destabilized leading to a strong compressibility. Finally, we discuss the characteristic momentum distribution of the predicted phases, which can be used to detect the phases in time-of-flight measurements. |
eng |
dc.description.sponsorship |
DFG/GRK/1729 |
|
dc.language.iso |
eng |
|
dc.publisher |
Bristol : Institute of Physics Publishing |
|
dc.relation.ispartofseries |
New Journal of Physics 18 (2016), Nr. 4 |
|
dc.rights |
CC BY 3.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/3.0/ |
|
dc.subject |
kinetic frustration |
eng |
dc.subject |
synthetic magnetism |
eng |
dc.subject |
ultracold gases |
eng |
dc.subject |
Bosons |
eng |
dc.subject |
Crystal lattices |
eng |
dc.subject |
Optical materials |
eng |
dc.subject |
Attractive interactions |
eng |
dc.subject |
Density dependent |
eng |
dc.subject |
Density modulation |
eng |
dc.subject |
Geometric frustration |
eng |
dc.subject |
Hopping amplitude |
eng |
dc.subject |
Momentum distributions |
eng |
dc.subject |
Time of flight measurements |
eng |
dc.subject |
Ultracold gas |
eng |
dc.subject |
Optical lattices |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
Density-induced geometric frustration of ultra-cold bosons in optical lattices |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.issn |
1367-2630 |
|
dc.relation.doi |
https://doi.org/10.1088/1367-2630/18/4/045016 |
|
dc.bibliographicCitation.issue |
4 |
|
dc.bibliographicCitation.volume |
18 |
|
dc.bibliographicCitation.firstPage |
45016 |
|
tib.accessRights |
frei zug�nglich |
|