Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spontaneous finite momentum pairing in superconductors without inversion
  symmetry   We analyze the effect of magnetic fluctuations in superconductors with strong
spin-orbit coupling and show that they drive a phase transition between two
superconducting states: a conventional phase with zero center-of-mass momentum
of Cooper pairs, and an exotic phase with non-zero pair momentum. The latter is
found to exhibit persistent currents without magnetic field in doubly connected
geometries such as rings. Surprisingly, the transition temperature into the
superconducting state can be increased by applying a Zeeman magnetic field.

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The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio