Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The nuclear energy density functionals with modified radial dependence
  of the isoscalar effective mass   Calculations for infinite nuclear matter with realistic nucleon-nucleon
interactions suggest that the isoscalar effective mass (IEM) of a nucleon at
the saturation density equals $m^*/m\sim 0.8\pm 0.1$, at variance with
empirical data on the nuclear level density in finite nuclei which are
consistent with $m^*/m\approx 1$. This contradicting results might be
reconciled by enriching the radial dependence of IEM. In this work four new
terms are introduced into the Skyrme-force inspired local energy-density
functional: $\tau(\nabla\rho)^2$, $\tau\frac{d\rho}{dr}$, $\tau^2$ and
$\tau\Delta\rho$. The aim is to investigate how they influence the radial
dependence of IEM and, in turn, the single-particle spectra.

37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga