Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hunting for gravitational quantum spikes   We present the result of our examination of quantum structures called quantum
spikes. The classical spikes, that are known in gravitational systems, occur in
the evolution of the inhomogeneous spacetimes. Different kind of spikes, which
we name strange spikes, can be seen in the dynamics of the homogeneous sector
of the Belinski-Khalatnikov-Lifshitz scenario. They can be made visible if the
so-called inhomogeneous initial data are used. The question to be explored is
whether the strange spikes may survive quantization. The answer is in the
affirmative. However, this is rather a subtle effect that needs further
examination using sophisticated analytical and numerical tools. The spikes seem
to be of fundamental importance, both at classical and quantum levels, as they
may serve as seeds of real structures in the universe.

15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn