Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Medium effects in strange quark matter and strange stars   We investigate the properties of strange quark matter at zero temperature
including medium effects. The quarks are considered as quasiparticles which
acquire an effective mass generated by the interaction with the other quarks of
the dense system. The effective quark masses are derived from the zero momentum
limit of the dispersion relations following from an effective quark propagator
obtained from resumming one-loop self energy diagrams in the hard dense loop
approximation. This leads to a thermodynamic selfconsistent description of
strange quark matter as an ideal Fermi gas of quasiparticles. Within this
approach we find that medium effects reduce the overall binding energy with
respect to $^{56}Fe$ of strange quark matter. For realistic values of the
strong coupling constant strange quark matter is not absolutely stable. The
application to pure strange quark matter stars shows that medium effects have,
nevertheless, no impact on the mass-radius relation of the stars. However, a
phase transition to hadronic matter at the surface of the stars becomes more
likely.

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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: physics
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga