Zobrazeno 1 - 10
of 493
pro vyhledávání: '"Nägerl, H"'
Autor:
Mark, M. J., Flannigan, S., Meinert, F., Jag-Lauber, K., D'Incao, J. P., Daley, A. J., Nägerl, H. -C.
Publikováno v:
Phys. Rev. Research 2, 043050 (2020)
We observe the dissipative dynamics of a dense, strongly interacting gas of bosonic atom pairs in an optical lattice, controlling the strength of the two-body interactions over a wide parameter regime. We study how three-body losses contribute to the
Externí odkaz:
http://arxiv.org/abs/2005.09763
Autor:
Orbán, A., Vexiau, R., Krieglsteiner, O., Nägerl, H. -C., Dulieu, O., Crubellier, A., Bouloufa-Maafa, N.
Publikováno v:
Phys. Rev. A 92, 032510 (2015)
A model for determining the hyperfine structure of the excited electronic states of diatomic bialkali heteronuclear molecules is formulated from the atomic hyperfine interactions, and is applied to the case of bosonic $^{39}$KCs and fermionic $^{40}$
Externí odkaz:
http://arxiv.org/abs/1507.06519
Autor:
Zenesini, A., Huang, B., Berninger, M., Besler, S., Nägerl, H. -C., Ferlaino, F., Grimm, R., Greene, Chris H., von Stecher, J.
Publikováno v:
New J. Phys. 15 043040 (2013)
We combine theory and experiment to investigate five-body recombination in an ultracold gas of atomic cesium at negative scattering length. A refined theoretical model, in combination with extensive laboratory tunability of the interatomic interactio
Externí odkaz:
http://arxiv.org/abs/1205.1921
Publikováno v:
Few-Body Syst (2011) 51: 113-133
Ultracold atomic gases have developed into prime systems for experimental studies of Efimov three-body physics and related few-body phenomena, which occur in the universal regime of resonant interactions. In the last few years, many important breakth
Externí odkaz:
http://arxiv.org/abs/1108.1909
Publikováno v:
Phys. Rev. Lett. 107, 175301 (2011)
We perform precision measurements on a Mott-insulator quantum state of ultracold atoms with tunable interactions. We probe the dependence of the superfluid-to-Mott-insulator transition on the interaction strength and explore the limits of the standar
Externí odkaz:
http://arxiv.org/abs/1107.1803
Autor:
Berninger, M., Zenesini, A., Huang, B., Harm, W., Nägerl, H. -C., Ferlaino, F., Grimm, R., Julienne, P. S., Hutson, J. M.
Publikováno v:
Phys. Rev. Lett. 107, 120401 (2011)
We report on the observation of triatomic Efimov resonances in an ultracold gas of cesium atoms. Exploiting the wide tunability of interactions resulting from three broad Feshbach resonances in the same spin channel, we measure magnetic-field depende
Externí odkaz:
http://arxiv.org/abs/1106.3933
Autor:
Bai, Jianmei, Ahmed, E. H., Beser, B., Guan, Y., Kotochigova, S., Lyyra, A. M., Ashman, S., Wolfe, C. M., Huennekens, J., Xie, Feng, Li, Dan, Li, Li, Tamanis, M., Ferber, R., Drozdova, A., Pazyuk, E., Stolyarov, A. V., Danzl, J. G., Nägerl, H. -C., Bouloufa, N., Dulieu, O., Amiot, C., Salami, H., Bergeman, T.
We present experimentally derived potential curves and spin-orbit interaction functions for the strongly perturbed $A^{1}\Sigma_{u}^{+}$ and $b^{3}\Pi_{u}$ states of the cesium dimer. The results are based on data from several sources. Laser-induced
Externí odkaz:
http://arxiv.org/abs/1101.5412
Autor:
Lercher, A. D., Takekoshi, T., Debatin, M., Schuster, B., Rameshan, R., Ferlaino, F., Grimm, R., Nägerl, H. -C.
Publikováno v:
Eur. Phys. J. D Topical issue: Cold Quantum Matter - Achievements and Prospects (2011)
We report the simultaneous production of Bose-Einstein condensates (BECs) of $^{87}$Rb and $^{133}$Cs atoms in separate optical traps. The two samples are mixed during laser cooling and loading but are separated by $400 \mu$m for the final stage of e
Externí odkaz:
http://arxiv.org/abs/1101.1409
Autor:
Knoop, S., Ferlaino, F., Berninger, M., Mark, M., Nägerl, H. -C., Grimm, R., D'Incao, J. P., Esry, B. D.
Publikováno v:
Phys. Rev. Lett. 104, 053201 (2010)
We report on the observation of an elementary exchange process in an optically trapped ultracold sample of atoms and Feshbach molecules. We can magnetically control the energetic nature of the process and tune it from endoergic to exoergic, enabling
Externí odkaz:
http://arxiv.org/abs/0911.1999
Publikováno v:
J. Phys.: Conf. Ser. 194, 012064 (2009)
We discuss our recent observation of an atom-dimer Efimov resonance in an ultracold mixture of Cs atoms and Cs_2 Feshbach molecules [Nature Phys. 5, 227 (2009)]. We review our experimental procedure and present additional data involving a non-univers
Externí odkaz:
http://arxiv.org/abs/0907.4510