Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Elusive Neutrons from Nuclei in Effective Field Theory   We review recent computations of neutral pion photoproduction and Compton
scattering on the deuteron in baryon chiral perturbation theory. Progress in
extracting the neutron electric dipole amplitude, which is relevant in neutral
pion photoproduction, and the neutron polarizabilities, which are relevant in
Compton scattering, is discussed.

13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
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The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: stat
4
The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat