Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rho properties in a hot meson gas   Using effective meson Lagrangians we study the interaction of rho mesons in a
hot baryon-free system. Various mesonic resonances in direct $s$-channel
reactions are investigated employing standard self-energy techniques, including
new reactions that have up to now not been considered in a self-consistent
approach at finite temperature. The importance of subthreshold resonances,
which are readily accounted for through off-shell effects within our framework,
is emphasized. Special care is taken in reproducing radiative decay widths, as
they provide valuable constraints on the evaluation of dilepton spectra. In
particular, we compare our results for dilepton production rates to earlier
calculations based on an incoherent summation of individual processes.

26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci