Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nucleon structure effect on the longitudinal response function   Using the quark-meson coupling model, we study the longitudinal response
function for quasielastic electron scattering from nuclear matter within
relativistic RPA. In QMC the coupling constant between the scalar meson and the
nucleon is expected to decrease with increasing nuclear density. Furthermore,
since the electromagnetic form factors of the in-medium nucleon are modified at
the same time, the longitudinal response function and the Coulomb sum are
reduced by a total of about 20% in comparison with the Hartree contribution.

21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs