Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological spin liquid phase in a low-dimensional organic molecular
  compound   We report the discovery of a correlated insulator with a bulk gap at
two-thirds filling in a geometrically frustrated Hubbard model that describes
the low-energy physics of Mo$_3$S$_7$(dmit)$_3$. This is very different from
the Mott insulator expected at half-filling. We show that the insulating phase,
which persists even for very weak electron-electron interactions ($U$), is
adiabatically connected to the Haldane phase and is consistent with experiments
on Mo$_3$S$_7$(dmit)$_3$

8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph