Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmological solutions of supercritical string theory   We study quintessence-driven, spatially flat, expanding FRW cosmologies that
arise naturally from string theory formulated in a supercritical number of
spacetime dimensions. The tree-level potential of the string theory produces an
equation of state at the threshold between accelerating and decelerating
cosmologies, and the resulting spacetime is globally conformally equivalent to
Minkowski space. We demonstrate that exact solutions exist with a condensate of
the closed-string tachyon, the simplest of which is a Liouville wall moving at
the speed of light. We rely on the existence of this solution to derive
constraints on the couplings of the tachyon to the dilaton and metric in the
string theory effective action. In particular, we show that the tachyon
dependence of the Einstein term must be nontrivial.

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The categories of this paper are: q-bio
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The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: stat
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg