Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bound-state field theory approach to proton structure effects in muonic
  hydrogen   A bound-state field theory approach to muonic hydrogen is set up using a
variant of the Furry representation in which the lowest-order Hamiltonian
describes a muon in the presence of a point Coulomb field, but the origin of
the binding field is taken to be three charged quarks in the proton which are
modeled as Dirac particles that move freely within a spherical well.
Bound-state field theory techniques are used to evaluate one- and two-photon
effects. Particular attention is paid to two-photon exchange diagrams, which
include the effect of proton polarizability. In addition the modification of
the electromagnetic self energy of the proton by the electric field of the muon
is examined. Finally, the model is used to carry out a calculation of the
static electric polarizability of the proton.

23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th