Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crossing the phantom divide line in the Holographic dark energy model in
  a closed universe   Conditions needed to cross the phantom divide line in an interacting
holographic dark energy model in closed Friedmann- Robertson-Walker universe
are discussed. The probable relationship between this crossing and the
coincidence problem is studied.

27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg