Since the achievement of quantum degeneracy in gases of chromium atoms in 2004, the
experimental investigation of ultracold gases made of highly magnetic atoms has …

The realization of Bose Einstein condensates (BEC) and quantum degenerate Fermi gases
with cold atoms has been a highlight of quantum physics during the past decade. Cold …

In contrast to light, matter-wave optics of quantum gases deals with interactions even in free
space and for ensembles comprising millions of atoms. We exploit these interactions in a …

In a joint experimental and 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 …

Policies to reduce emissions from deforestation would benefit from clearly derived, spatially
explicit, statistically bounded estimates of carbon emissions. Existing efforts derive carbon …

An overview of the physics of spinor and dipolar Bose–Einstein condensates (BECs) is
given. Mean-field ground states, Bogoliubov spectra, and many-body ground and excited …

Collapse in dipolar Bose-Einstein condensates may be arrested by quantum fluctuations.
Due to the anisotropy of the dipole-dipole interactions, the dipole-driven collapse induced by …

Long-range interactions in quantum gases are predicted to give rise to an excitation
spectrum of roton character, similar to that observed in superfluid helium. We investigated …

We investigate the influence of quantum fluctuations upon dipolar Bose gases by means of
the Bogoliubov–de Gennes theory. Thereby, we make use of the local density approximation …

We theoretically investigate various beyond mean-field effects on Bose gases at zero
temperature featuring the anisotropic and long-range dipole-dipole interaction in addition to …