Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Approximations of the spectral function   The ICARUS and future liquid argon neutrino experiments generate demand for
evaluating the spectral function of argon. In this paper we use oxygen nucleus
as a testing ground for our phenomenological approach to the spectral function
and probe the influence of momentum distribution and treatment of the mean
field spectral function on the differential cross sections. The obtained model
reproduces very well results of the exact spectral function of oxygen and can
be applied to heavier nuclei, such as calcium or argon.

5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg