Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Adsorbate Interactions of CO Chemisorbed on Pt(111)   We show that the observed repulsive interaction between CO molecules on the
Pt(111) surface can be explained by the coupling of the Pt--CO separation with
Pt-Pt coordinates in the substrate. The observed long range of the interaction
and the non-monotonic distance dependence are reproduced. The magnitude of the
multiphonon decay of the Pt--CO vibration calculated in this model is also in
agreement with experiment.

16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics