Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unitarity at Infinity and Topological Holography   Recently it has been suggested that non-gaussian inflationary perturbations
can be usefully analysed in terms of a putative dual gauge theory defined on
the future conformal infinity generated by an accelerating cosmology. The
problem is that unitarity of this gauge theory implies a strong constraint [the
"Strominger bound"] on the matter fields in the bulk. We argue that the bound
is just a reflection of the equation of state of cosmological matter. The
details motivate a discussion of the possible relevance of the ``dS/CFT
correspondence" to the resolution of the Big Bang singularity. It is argued
that the correspondence may require the Universe to come into existence along a
non-singular spacelike hypersurface, as in the theories of ``creation from
nothing" discussed by Firouzjahi, Sarangi, and Tye, and also by Ooguri et al.
The argument makes use of the unusual properties of gauge theories defined on
topologically non-trivial spaces.

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The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn