Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phonon-bound nucleon pairs predicted by the Bohm-Staver relation   Attention is drawn to recent observation of a fluid phase of hydrogen nucleii
in transition metal hydrides. It is suggested that phonon exchange processes
might be responsible for the phase transition since bound pair states,
analogous to Cooper pairs, would possess the required mobility and might
moreover render the phase transition energetically favourable. A generic
formula for the ground state binding energy based upon the results of numerical
calculations is presented and a special test of the theory is proposed.

34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs