Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Astrophysical Observations of Early Universe Phase Transitions   After a review of CMBR correlations and recent observations, a study of
possible CMBR observations of the QCD early universe phase transition is
discussed. A model for the QCD bubble walls gives the surface tension found in
lattice calculations, and a 1+1 dimensional treatment in this model for bubble
collisions shows an interior gluonic wall, a disk with the thickness of a
nucleon and horizon size radius. This could lead to a similar magnetic wall,
which would produce B-B type CMBR polarization correlations distinct from very
early universe models. The study of magnetic fields produced in bubble
collisions in MSSM models with a first order Electroweak Phase Transition is
also discussed.

34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th