dc.identifier.uri | http://dx.doi.org/10.15488/1169 | |
dc.identifier.uri | http://www.repo.uni-hannover.de/handle/123456789/1193 | |
dc.contributor.author | Chomaz, L. | |
dc.contributor.author | Baier, S. | |
dc.contributor.author | Petter, D. | |
dc.contributor.author | Mark, M.J. | |
dc.contributor.author | Wächtler, F. | |
dc.contributor.author | Santos, Luis | |
dc.contributor.author | Ferlaino, F. | |
dc.date.accessioned | 2017-02-24T08:49:30Z | |
dc.date.available | 2017-02-24T08:49:30Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Chomaz, L.; Baier, S.; Petter, D.; Mark, M.J.; Wächtler, F. et al.: Quantum-Fluctuation-driven crossover from a dilute bose-einstein condensate to a macrodroplet in a dipolar quantum fluid. In: Physical Review X 6 (2016), Nr. 4, 41039. DOI: https://doi.org/10.1103/PhysRevX.6.041039 | |
dc.description.abstract | In a joint experimental, theoretical effort, we report on the formation of a macrodroplet state in an ultracold bosonic gas of erbium atoms with strong dipolar interactions. By precise tuning of the s-wave scattering length below the so-called dipolar length, we observe a smooth crossover of the ground state from a dilute Bose-Einstein condensate to a dense macrodroplet state of more than 2 × 104 atoms. Based on the study of collective excitations, loss features, we prove that quantum fluctuations stabilize the ultracold gas far beyond the instability threshold imposed by mean-field interactions. Finally, we perform expansion measurements, showing that although self-bound solutions are prevented by losses, the interplay between quantum stabilization, losses results in a minimal time-of-flight expansion velocity at a finite scattering length. | eng |
dc.description.sponsorship | DFG/RTG/1729 | |
dc.description.sponsorship | DFG/FOR/2247 | |
dc.language.iso | eng | |
dc.publisher | College Park, MD : American Physical Society | |
dc.relation.ispartofseries | Physical Review X 6 (2016), Nr. 4 | |
dc.rights | CC BY 3.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | |
dc.subject | Ground state | eng |
dc.subject | Quantum chemistry | eng |
dc.subject | Quantum electronics | eng |
dc.subject | Quantum theory | eng |
dc.subject | Shear waves | eng |
dc.subject | Statistical mechanics | eng |
dc.subject | Bose-Einstein condensates | eng |
dc.subject | Collective excitations | eng |
dc.subject | Dipolar interaction | eng |
dc.subject | Expansion velocity | eng |
dc.subject | Mean-field interactions | eng |
dc.subject | Quantum fluctuation | eng |
dc.subject | S-wave scattering lengths | eng |
dc.subject | Scattering length | eng |
dc.subject | Bose-Einstein condensation | eng |
dc.subject.ddc | 530 | Physik | ger |
dc.title | Quantum-Fluctuation-driven crossover from a dilute bose-einstein condensate to a macrodroplet in a dipolar quantum fluid | |
dc.type | Article | |
dc.type | Text | |
dc.relation.issn | 2160-3308 | |
dc.relation.doi | https://doi.org/10.1103/PhysRevX.6.041039 | |
dc.bibliographicCitation.issue | 4 | |
dc.bibliographicCitation.volume | 6 | |
dc.bibliographicCitation.firstPage | 41039 | |
dc.description.version | publishedVersion | |
tib.accessRights | frei zug�nglich |