Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inflating, Warming Up, and Probing the Pre-Bangian Universe   Classical and quantum gravitational instabilities, can, respectively, inflate
and warm up a primordial Universe satisfying a superstring-motivated principle
of "Asymptotic Past Triviality". A physically viable big bang is thus generated
without invoking either large fine-tunings or a long period of post-big bang
inflation. Properties of the pre-bangian Universe can be probed through its
observable relics, which include: i) a (possibly observable) stochastic
gravitational-wave background; ii) a (possible) new mechanism for seeding the
galactic magnetic fields; iii) a (possible) new source of large-scale structure
and CMB anisotropy.

21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat