Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vortex Core States in Superconducting Graphene   The distinctive features of the electronic structure of vortex states in
superconducting graphene are studied within the Bogolubov-de Gennes theory
applied to excitations near the Dirac point. We suggest a scenario describing
the subgap spectrum transformation which occurs with a change in the doping
level. For an arbitrary vorticity and doping level we investigate the problem
of existence of zero energy modes. The crossover to a Caroli - de Gennes -
Matricon type of spectrum is studied.

20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
19
The categories of this paper are: eess