Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hadronization of the Quark Universe   We explore quantitatively the conditions in which matter (protons, neutrons)
formed in the Early Universe during a period which spanned 10--50mus. We obtain
all chemical potentials implied by the present day baryon-to-photon ratio. The
baryochemical potential reaches its minimal value at the beginning of
hadronization of the quark Universe, where mu_b=1.1 \pm 0.25 eV. In the mixed
hadron-quark phase, a significant hadron sector electric charge distillation is
found.

27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ