Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The primordial explosion of a false white hole from a 5D vacuum   We explore the cosmological consequences of some possible big bang produced
by a black-hole with mass $M$ in an 5D extended SdS. Under these particular
circumstances, the effective 4D metric obtained by the use of a constant
foliation on the extra coordinate is comported as a false white-hole (FWH),
which evaporates for all unstable modes that have wavelengths bigger than the
size of the FWH. Outside the white hole the repulsive gravitational field can
be considered as weak, so that the dynamics for fluctuations of the inflaton
field and the scalar perturbations of the metric can be linearized.

20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th