Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lightlike Braneworlds   We propose a new class of p-brane models describing intrinsically lightlike
branes in any world-volume dimensions. Properties of the dynamics of these
lightlike p-branes in various gravitational backgrounds of interest in the
context of braneworlds are briefly described. Codimenion two (and more)
lightlike braneworlds perform in their ground states non-trivial motions in the
extra dimensions in sharp contrast to standard (Nambu-Goto) braneworlds.

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The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ph
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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: math