Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic Superfluid Behavior of a Dipolar Bose-Einstein Condensate   We present transport measurements on a dipolar superfluid using a
Bose-Einstein condensate of Dy-162 with strong magnetic dipole-dipole
interactions. By moving an attractive laser beam through the condensate we
observe an anisotropy in superfluid flow. This observation is compatible with
an anisotropic critical velocity for the breakdown of dissipationless flow,
which, in the spirit of the Landau criterion, can directly be connected to the
anisotropy of the underlying dipolar excitation spectrum. In addition, the
heating rate above this critical velocity reflects the same anisotropy. Our
observations are in excellent agreement with simulations based on the
Gross-Pitaevskii equation and highlight the effect of dipolar interactions on
macroscopic transport properties, rendering dissipation anisotropic.

23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat