Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interaction Between Two Rows of Localized Adsorption Sites in a 2D
  One-Component Plasma   We compute the free energy for two rows of localized adsorption sites
embedded in a two dimensional one-component plasma with neutralizing background
density $\rho$. The interaction energy between the adsorption sites is
repulsive. We also compute the average occupation number of the adsorption
sites and compare it to the result for a single row of sites. The exact result
indicates that the discretization does not induce charge asymmetry and no
attractive forces occur.

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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: eess
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
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The categories of this paper are: stat
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph