Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Reimann, S. M."'
A repulsively interacting Bose-Einstein condensate on a ring is well known to show persistent currents. For attractive interactions, however, a bound state may form that renders the rotation classical. Here we show that in a multiply-connected confin
Externí odkaz:
http://arxiv.org/abs/2402.19126
The tunneling dynamics of a magnetic $^{164}$Dy quantum gas in an elongated or pancake skewed double-well trap is investigated with a time-dependent extended Gross-Pitaevskii approach. Upon lifting the energy offset, different tunneling regimes can b
Externí odkaz:
http://arxiv.org/abs/2401.03725
We investigate the formation of self-bound quantum droplets in a one-dimensional binary mixture of bosonic atoms, applying the method of numerical diagonalization of the full Hamiltonian. The excitation spectra and ground-state pair correlations sign
Externí odkaz:
http://arxiv.org/abs/2302.00385
Autor:
Mukherjee, K., Reimann, S. M.
We investigate the classicality of linear dipolar droplet arrays through a normal mode analysis of the dynamical properties in comparison to the supersolid regime. The vibrational patterns of isolated-droplet crystals that time-evolve after a small i
Externí odkaz:
http://arxiv.org/abs/2212.09658
Autor:
Tengstrand, M. Nilsson, Reimann, S. M.
While quantum fluctuations in binary mixtures of bosonic atoms with short-range interactions can lead to the formation of a self-bound droplet, for equal intra-component interactions but an unequal number of atoms in the two components, there is an e
Externí odkaz:
http://arxiv.org/abs/2110.15675
Three Contributions to the Seventh International Symposium on Small Particles and Inorganic Clusters
Publikováno v:
Forschungszentrum Rossendorf; FZR-58 Preprint
Externí odkaz:
https://hzdr.qucosa.de/id/qucosa%3A22051
https://hzdr.qucosa.de/api/qucosa%3A22051/attachment/ATT-0/
https://hzdr.qucosa.de/api/qucosa%3A22051/attachment/ATT-0/
Publikováno v:
Forschungszentrum Rossendorf; FZR-69
Externí odkaz:
https://hzdr.qucosa.de/id/qucosa%3A22046
https://hzdr.qucosa.de/api/qucosa%3A22046/attachment/ATT-0/
https://hzdr.qucosa.de/api/qucosa%3A22046/attachment/ATT-0/
Publikováno v:
Phys. Rev. A 102, 053302 (2020)
Finite fermion systems are known to exhibit shell structure in the weakly-interacting regime, as well known from atoms, nuclei, metallic clusters or even quantum dots in two dimensions. All these systems have in common that the particle interactions
Externí odkaz:
http://arxiv.org/abs/2004.01006
Publikováno v:
Phys. Rev. A 103, 013313 (2021)
We investigate the rotational properties of a dipolar Bose-Einstein condensate trapped in a toroidal geometry. Studying the ground states in the rotating frame and at fixed angular momenta, we observe that the condensate acts in distinctly different
Externí odkaz:
http://arxiv.org/abs/2003.06408
Publikováno v:
Phys. Rev. A 100, 063638 (2019)
It is well-known that a rotating Bose-Einstein condensate forms vortices to carry the angular momentum. For a first vortex to nucleate at the trap center, the rotational frequency must become larger than a certain critical value. The vortex nucleatio
Externí odkaz:
http://arxiv.org/abs/1910.11461