Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Understanding the 5/2 Fractional Quantum Hall Effect without the
  Pfaffian Wave Function   It is demonstrated that an understanding of the 5/2 fractional quantum Hall
effect can be achieved within the composite fermion theory without appealing to
the Pfaffian wave function. The residual interaction between composite fermions
plays a crucial role in establishing incompressibility at this filling factor.
This approach has the advantage of being amenable to systematic perturbative
improvements, and produces ground as well as excited states. It, however, does
not relate to non-Abelian statistics in any obvious manner.

25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph