Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of vortices on the spin-flip lifetime of atoms in superconducting
  atom-chips   We study theoretically the lifetime of magnetically trapped atoms in the
close vicinity of a type-II superconducting surface, in the context of
superconducting atom-chips. We account for the magnetic noise created at the
cloud position by the vortices present in the superconductor and give specific
results for our experiment which uses a niobium film. Our main result is that
atom losses are dominated by the presence of vortices. They remain however
dramatically smaller than in equivalent room-temperature atom-chip setups using
normal metals.

4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc