Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Momentum transfer dependence of the proton's electric and magnetic
  polarizabilities   The Q^2-dependence of the sum of the electric and magnetic polarizabilities
of the proton is calculated over the range 0 \leq Q^2 \leq 6 GeV^2 using the
generalized Baldin sum rule. Employing a parametrization of the F_1 structure
function valid down to Q^2 = 0.06 GeV^2, the polarizabilities at the real
photon point are found by extrapolating the results of finite Q^2 to Q^2 = 0
GeV^2. We determine the evolution over four-momentum transfer to be consistent
with the Baldin sum rule using photoproduction data, obtaining \alpha + \beta =
13.7 \pm 0.7 \times 10^{-4}\, \text{fm}^3.

14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org