Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dispersion-theoretical analysis of the electromagnetic form factors of
  the nucleon: Past, present and future   We review the dispersion-theoretical analysis of the electromagnetic form
factors of the nucleon. We emphasize in particular the role of unitarity and
analyticity in the construction of the isoscalar and isovector spectral
functions. We present new results on the extraction of the nucleon radii, the
electric and magnetic form factors and the extraction of $\omega$-meson
couplings. All this is supplemented by a detailed calculation of the
theoretical uncertainties, using bootstrap and Bayesian methods to pin down the
statistical errors, while systematic errors are determined from variations of
the spectral functions. We also discuss the physics of the time-like form
factors and point out further issues to be addressed in this framework.

35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
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The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph