Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmic Problems for Condensed Matter Experiment   Condensed matter analogs of the cosmological environment have raised the hope
that laboratory experiments can be done to test theoretical ideas in cosmology.
I will describe Unruh's sonic analog of a black hole (``dumbhole'') that can be
used to test Hawking radiation, and some recent proposals on how one might be
able to create a dumbhole in the lab. In this context, I also discuss an
experiment already done on the Helium-3 AB system by the Lancaster group.

32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph