Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semiclassical transport of particles with dynamical spectral functions   The conventional transport of particles in the on-shell quasiparticle limit
is extended to particles of finite life time by means of a spectral function
A(X,\vec{P},M^2) for a particle moving in an area of complex self-energy
\Sigma^{ret}_X = Re \Sigma^{ret}_X -i \Gamma_X/2. Starting from the
Kadanoff-Baym equations we derive in first order gradient expansion equations
of motion for testparticles with respect to their time evolution in \vec{X},
\vec{P} and M^2. The off-shell propagation is demonstrated for a couple of
model cases that simulate hadron-nucleus collisions. In case of nucleus-nucleus
collisions the imaginary part of the hadron self-energy \Gamma_X is determined
by the local space-time dependent collision rate dynamically. A first
application is presented for A + A reactions up to 95 A MeV, where the effects
from the off-shell propagation of nucleons are discussed with respect to high
energy proton spectra, high energy photon production as well as kaon yields in
comparison to the available data from GANIL.

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The categories of this paper are: physics
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat