Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Oscillations arising when switching on/off a discontinuous magnetic
  field   In the present paper, we theoretically study the effect of density of state
variation on the phenomena in the discontinuous magnetic field. Special
attention is paid to the transient processes when the magnetic field is
switched on (off). The difference in the density of states for the free 2D
electron gas and the electron gas on under the magnetic field can lead to the
occurrence of the electrostatic potential. Considering the transient phenomena
of magnetic field switching, we obtain oscillating behavior of the
electrostatic potential. The analysis includes two limit cases when the
oscillation frequency of the electrostatic potential is low relative to the
cyclotron frequency and when they are of the same order.

1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg