Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Manifestly $O(d,d)$ Invariant Approach to Space-Time Dependent String
  Vacua   An $O(d,d)$ symmetry of the manifold of string vacua that do not depend on
$d$ (out of $D$) space-time coordinates has been recently identified. Here we
write down, for $d=D-1$, the low energy equations of motion and their general
solution in a manifestly $O(d,d)$-invariant form, pointing out an amusing
similarity with the renormalization group framework. Previously considered
cosmological and black hole solutions are recovered as particular examples.

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The categories of this paper are: astro-ph
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The categories of this paper are: stat
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: math
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The categories of this paper are: eess
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The categories of this paper are: hep-ph
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The categories of this paper are: funct-an
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: physics
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The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: cs