Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamic domain wall in charged dilaton black hole spacetimes   In this paper we study the dynamics of $ n-1$ dimensional domain wall
universe embedded in a $n$ dimensional charged dilaton black hole bulk with the
non-asymptotically flat and non-asymptotically (A)dS characters. We find that
domain wall can always cross horizon, for which the dilaton coupling constant
$a$ and the ratio of pressure to density $w$ play the role of controlling
parameters. Then the consequent domain wall motion outside the black hole
generally falls into four situations: all time accelerating expansion, slow
expansion with a constant speed, expansion followed by collapsing into horizon,
and accelerating collapsing into horizon. However, there exists a small patch
of parametric sphere, in which the domain wall expansion first slows down and
then accelerates. Our analysis also reveals that the big bang theory applies to
the domain wall world scenario, while big bounce will not appear in our paper.
Furthermore, we find that when we choose the expansion stage as radiation or
matter stage, the resultant coupling strength between dilaton field and Maxwell
field depends on the different black hole models.

17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom