Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-consistent relativistic random phase approximation with vacuum
  polarization   We present a theoretical formulation for the description of nuclear
excitations within the framework of relativistic random-phase approximation
whereby the vacuum polarization arising from nucleon-antinucleon fields is duly
accounted for. The vacuum contribution to Lagrangian is explicitly described as
extra new terms of interacting mesons by means of the derivative expansion of
the effective action. It is shown that the self-consistent calculation yields
zero eigenvalue for the spurious isoscalar-dipole state and also conserves the
vector-current density.

29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph