Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical Simulation of the Hydrodynamical Combustion to Strange Quark
  Matter in the Trapped Neutrino Regime   We simulate and study the microphysics of combustion (flame burning) of two
flavored quark matter (u, d) to three flavoured quark matter (u,d,s) in a
trapped neutrino regime applicable to conditions prevailing in a hot
proto-neutron star. The reaction-diffusion-advection equations for (u,d) to
(u,d,s) combustion are coupled with neutrino transport, which is modelled
through a flux-limited diffusion scheme. The flame speed is proportional to
initial lepton fraction because of the release of electron chemical potential
as heat, and reaches a steady-state burning speed of (0.001-0.008)c. We find
that the burning speed is ultimately driven by the neutrino pressure gradient,
given that the pressure gradient induced by quarks is opposed by the pressure
gradients induced by electrons. This suggests, somewhat counter-intuitively,
that the pressure gradients that drive the interface are controlled primarily
by leptonic weak decays rather than by the quark Equation of State (EOS). In
other words, the effects of the leptonic weak interaction, including the
corresponding weak decay rates and the EOS of electrons and neutrinos, are at
least as important as the uncertainties related to the EOS of high density
matter. We find that for baryon number densities nB <= 0.35 fm-3, strong
pressure gradients induced by leptonic weak decays drastically slow down the
burning speed, which is thereafter controlled by the much slower burning
process driven by backflowing downstream matter. We discuss the implications of
our findings to proto-neutron stars.

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The categories of this paper are: gr-qc
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The categories of this paper are: physics
26
The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
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The categories of this paper are: nlin
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The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
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The categories of this paper are: math
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci