Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Many-body interactions among adsorbed atoms and molecules within carbon
  nanotubes and in free space   This paper assesses the importance of three-body triple dipole interactions
for quasi-one dimensional phases of He, Ne, H_2, Ar, Kr and Xe confined within
interstitial channels or on the external surfaces of nanotube bundles. We find
the substrate-mediated contribution to be substantial: for interstitial H_2 the
well depth of the effective pair potential is reduced to approximately one half
of its value in free space.
  We carry out ab initio calculations on linear and equilateral configurations
of H_2 trimer and find that overlap interactions do not greatly change the DDD
interaction in the linear configuration when the spacing is greater than about
3 A. However, the DDD interaction alone is clearly insufficient for the
triangular configurations studied.

37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs