Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Suppression of the repulsive force in nuclear interactions near the
  chiral phase transition   We introduce an effective chiral Lagrangian with a dilaton responsible for
the trace anomaly in QCD. As the "dilaton limit" is taken, which drives a
system to near chiral restoration density, a linear sigma model emerges from
the highly non-linear structure. A striking prediction is that the
vector-meson--nucleon interaction gets strongly suppressed when the dilaton
limit is approached. Its phenomenological implications for the thermodynamics
of dense baryonic matter are briefly discussed.

4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
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The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
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The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg