Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electronic Bloch oscillation in a pristine monolayer graphene   In a pristine monolayer graphene subjected to a constant electric field along
the layer, the Bloch oscillation of an electron is studied in a simple and
efficient way. By using the electronic dispersion relation, the formula of a
semi-classical velocity is derived analytically, and then many aspects of Bloch
oscillation, such as its frequency, amplitude, as well as the direction of the
oscillation, are investigated. It is interesting to find that the electric
field affects the component of motion, which is non-collinear with electric
field, and leads the particle to be accelerated or oscillated in another
component.

29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
1
The categories of this paper are: cs
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con