Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonlinear electromagnetic response of few-layer graphene: A
  nonperturbative description   Nonperturbative approach based on exact solution of Boltzmann kinetic
equation in the relaxation time approximation is developed for the study of
nonlinear response of electron-doped few-layer graphene to a high-frequency
electromagnetic field. It is shown that nonperturbative approach can be applied
to a two-dimensional conductor with an arbitrary isotropic spectrum of
carriers.

28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
16
The categories of this paper are: stat