Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics and phase diagram of the $\nu=0$ quantum Hall state in bilayer
  graphene   Utilizing the Baym-Kadanoff formalism with the polarization function
calculated in the random phase approximation, the dynamics of the $\nu=0$
quantum Hall state in bilayer graphene is analyzed. Two phases with nonzero
energy gap, the ferromagnetic and layer asymmetric ones, are found. The phase
diagram in the plane $(\tilde{\Delta}_0,B)$, where $\tilde{\Delta}_0$ is a
top-bottom gates voltage imbalance, is described. It is shown that the energy
gaps in these phases scale linearly, $\Delta E\sim 10 B[T]K, with magnetic
field. The comparison of these results with recent experiments in bilayer
graphene is presented.

7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex