Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Flux creep in type-II superconductors: self-organized criticality
  approach   We consider the current density distribution function of a flux creep regime
in type-II superconductors by mapping the flux creep process to the dynamics of
a model with a self-organized criticality. We use an extremal Robin Hood type
model which evolves to Been's type critical state to treat magnetic flux
penetration into a superconductor and derive an analog of the current-voltage
characteristics in the flux creep region.

16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph