Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spontaneous symmetry breaking and Lifshitz transition in bilayer
  graphene   We derive the renormalization group equations describing all the short-range
interactions in bilayer graphene allowed by symmetry and the long range Coulomb
interaction. For certain range of parameters, we predict the first order phase
transition to the uniaxially deformed gapless state accompanied by the change
of the topology of the electron spectrum.

22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an