Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Total Current Blockade in an Ultra-Cold Dipolar Quantum Wire   Cold atom systems offer a great potential for the future design of new
mesoscopic quantum systems with properties that are fundamentally different
from semiconductor nanostructures, such as quantum dots and quantum wires with
electrons. Here, we investigate the analog of a quantum wire using ultra-cold
particles, and find a new scenario for the quantum transport: Attractive
interactions may lead to a complete suppression of current in the low-bias
range, a total current blockade. We demonstrate this effect for the example of
ultra-cold quantum gases with dipolar interactions.

8
The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con