Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: String theory as a diffusing system   Recent results on the effective non-local dynamics of the tachyon mode of
open string field theory (OSFT) show that approximate solutions can be
constructed which obey the diffusion equation. We argue that this structure is
inherited from the full theory, where it admits a universal formulation. In
fact, all known exact OSFT solutions are superpositions of diffusing surface
states. In particular, the diffusion equation is a spacetime manifestation of
OSFT gauge symmetries.

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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: solv-int
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
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The categories of this paper are: patt-sol